Best answer

Re: Concrete Garage Floor with no vapor barrier You will have to grind or shot blast the floor and put some type of coating over the epoxy moisture barrier, such as an epoxy coating or possibly just a few coats of a quality urethane.

Answered by: serg Date created: Jun 26, 2022

Do I need to seal cement board before tiling?

Asked By: Jonas Date created: Jun 17, 2022

Contrary to popular thought, tile and grout are not waterproof, and some moisture will penetrate even if sealant is used. ... However, if you choose to use concrete backerboard, which is much stronger and more durable than gypsum board, a water vapor membrane must be placed underneath it or a sealant applied on top of it.

Answered By: Eugen Konkov Date created: Jun 20, 2022

Do I need a vapor barrier behind cement board in shower?

Asked By: tanookiben Date created: Jun 07, 2022

Moisture barriers stop that water or vapor from getting any farther and potentially rotting your studs, the drywall or greenboard installed behind the enclosure. They are required beneath your shower pan and behind your shower walls.

Answered By: veben Date created: Jun 10, 2022

Do you need stone under a concrete slab?

Asked By: Nikita Date created: Jun 19, 2022

Because concrete is a very porous material, it will absorb any moisture that it contacts. This can cause pooling. Without crushed stone, pooling water will settle under it and erode your slab. Adding a layer of crushed stone will add proper drainage, as well as create a barrier between your slab and the ground.

Answered By: Maxim Date created: Jun 22, 2022

Is plaster water resistant?

Asked By: lucascaro Date created: Jun 14, 2022

Plaster used on the inside of homes is a different material altogether. It is water soluble and, without care, can succumb to moisture and humidity. Although interior plaster can never totally be waterproofed, there are some steps that you can take to create a stronger moisture barrier.1 Dec 2016

Answered By: p2kr Date created: Jun 17, 2022

Can plaster be waterproofed?

Asked By: KavinduWije Date created: Jun 19, 2022

Plaster used on the inside of homes is a different material altogether. It is water soluble and, without care, can succumb to moisture and humidity. Although interior plaster can never totally be waterproofed, there are some steps that you can take to create a stronger moisture barrier.

Answered By: Hristo Date created: Jun 21, 2022

Do plaster walls need primer?

Asked By: BLimitless Date created: Jun 19, 2022

Painting plaster walls is just like painting any other drywall. The primer that you use is the key. You need to us the best primer for plaster walls to seal the wall because paints won't take to it evenly without a good primer.

Answered By: rickster Date created: Jun 19, 2022

Do you have to seal cement board before tiling?

Asked By: JayD Date created: Jun 11, 2022

Contrary to popular thought, tile and grout are not waterproof, and some moisture will penetrate even if sealant is used. ... However, if you choose to use concrete backerboard, which is much stronger and more durable than gypsum board, a water vapor membrane must be placed underneath it or a sealant applied on top of it.

Answered By: Daniel Danielecki Date created: Jun 12, 2022

Does sealing concrete stop moisture?

Asked By: Matthias Braun Date created: Jun 10, 2022

What are Concrete Floor Sealants Used For? Floor sealants are a very effective moisture mitigation solution. They're used to seal the concrete subfloor and create an impermeable barrier between the subfloor and your flooring.

Answered By: Nino Filiu Date created: Jun 11, 2022

Is concrete block waterproof?

Asked By: Paresh Mangukiya Date created: Jun 12, 2022

Waterproofing Concrete Block Foundations. Concrete blocks and cinder blocks are much more permeable to water and water vapor than poured concrete. ... Block foundation walls will provide only a weak barrier against capillary water seepage and water vapor.

Answered By: Ankit Bajpai Date created: Jun 13, 2022

How do you waterproof a flat concrete roof?

Asked By: Mahesh Jamdade Date created: Jun 13, 2022

Step 1 - Clean Your Roof. In order to successfully seal your roof, you first need to start with a clean surface. ... Step 2 - Carry Out Minor Repairs. ... Step 3 - Use Seam Tape. ... Step 4 - Coat With Primer. ... Step 5 - Spray on a Vapor Barrier.

Answered By: Alexander Date created: Jun 15, 2022

Related Question Answers

JosephStyons

Professor

Do you need to seal a concrete floor before laying laminate?

You don't need to seal a concrete floor before installing laminate; however, to prevent moisture from the concrete floor from affecting your laminate, install a vapor barrier of polyethylene film. Install this barrier even if the concrete subfloor is covered by vinyl, linoleum, terrazzo or ceramic tile.

erenon

Professor

What do you put on concrete floor before laminate?

Begin installation by laying a plastic vapour barrier (minimum 6 mm thick) or any other manufacturer-recommended barrier on the concrete subfloor to prevent moisture from reaching the laminate flooring. Use vinyl tape to secure the barrier and keep it from coming out.

FluxedScript

Professor

Do you need plastic behind cement board?

Their online instructions/diagrams show no use of a vapor barrier. You should, so that any moisture that gets behind the cement board runs into the tub or shower instead of into your wall cavity (causing rot or mold/mildew).

Tudor

Professor

How do you drill into concrete without cracking it?

For drilling into concrete without causing concrete cracks, use a hammer drill, not a regular drill. You also need to use a carbide-tipped drill bit. These two pieces of equipment can make a great deal of difference.

Matthew Groves

Professor

How do you seal concrete to make it waterproof?

Penetrating Sealer Penetrating sealers fills the concrete and form a chemical barrier around it. It is also referred to as the impregnating concrete sealer. This is because it soaks into the concrete to keep water out. Siloxanes and silanes are the most common substances used to make penetrating sealers.

Serge de Gosson de Varennes

Professional

Do you need a vapor barrier behind cement board?

You still need a vapor barrier with cement board, although in this case the barrier can go behind the board. Cement board is heavy enough and breathable enough to take the moisture without a problem. By having the vapor barrier behind the cement board you stop the moisture going further into the wall.

Grzegorz Skibinski

Professional

Do you need to put a vapor barrier behind cement board?

You should NOT place a vapor barrier BEHIND the backer board. Where, pray tell, would any such collected vapor/water go? Answer:There's nowhere proper for such moisture to egress. The current best practice is to place waterproofing OVER the backetboard and just UNDER the tile.

Alexander Huszagh

Professional

How do you waterproof a concrete pool?

In order to waterproof swimming pools, it is recommended to use epoxy-cement systems as they create a solid barrier against counter pressure as well as a resistant layer.

David Ferenczy Rogožan

Professional

What do you put on concrete floor before vinyl?

Perhaps the easiest way to improve the insulation of a floating vinyl floor on concrete is to install a thermal underlayment, preferably made of cork, felt or a similar material. If you use an underlayment without a moisture barrier, it's a good idea to install a sheet of plastic below it for insurance.

O.rka

Professional

Are plaster walls waterproof?

It is water soluble and, without care, can succumb to moisture and humidity. Although interior plaster can never totally be waterproofed, there are some steps that you can take to create a stronger moisture barrier.

Siddharth Rout

User

Can I pour concrete around cast iron pipe?

You could just add a couple inches of sand, enough to handle the vapor barrier and then cover the pipe with a couple layers of plastic or roofing material and place the concrete right over the pipe.

Beau Smith

User

Can plaster walls be insulated?

If your historic house has original plaster walls, you should not blow insulation into the exterior walls. Old houses with plaster walls have no vapor barrier under the plaster to stop moist air from saturating the insulation. Instead, plaster walls are designed to allow the free exchange of air and moisture.

Thomas Orozco

User

How do I seal new plaster before painting?

1. Seal it. You first need to seal new plaster to make it less absorbent and to help the topcoat adhere better. A common way to seal it is with watered-down emulsion (known as a mist coat), as the plaster sucks up the water and becomes less absorbent.

SNM

User

How do you attach metal to concrete without drilling?

Things You'll Need Concrete anchor bolts work best to attach metal to concrete.

Steel can be attached to concrete without screws or glue by using concrete anchors and bolts.

Alternatively, you could cast the concrete with the metal embedded in the concrete..

Emil Stenström

User

How do you install moisture barrier under concrete slab?

Most exterior slabs do not need a vapor barrier. ... In general, place the concrete slab directly on top of the vapor barrier, with the subbase below. ... The vapor barrier can be placed under the subbase, if the building is closed in when the dry subbase material is placed.More items...

jay.sf

Guest

Do I need a vapor barrier between concrete and laminate flooring?

It is rolled out between the actual laminate flooring planks and the subfloor.

Very often, particularly in a below-grade installation on a concrete basement floor, a vapor barrier is recommended in addition to the underlayment.

That vapor barrier would go between the subfloor and the underlayment..

Fabio Lamanna

Guest

Do I need a vapor barrier between concrete and wood flooring?

Despite a successful moisture check and the presence of an underground moisture barrier, you still need additional protection from water vapor before laying a wood floor. Sheets of 6-mil thick polyethylene plastic, overlapped with seams taped, is one means of providing that moisture barrier.

Pedro M Duarte

Guest

Do I need to prime plaster walls before painting?

Painting plaster walls is just like painting any other drywall. The primer that you use is the key. You need to us the best primer for plaster walls to seal the wall because paints won't take to it evenly without a good primer.

davnicwil

Guest

Do I need to seal concrete before painting?

For a clean and even coat of paint, your concrete surface will need to be thoroughly cleaned before primer is applied. This is because concrete is a highly absorptive surface and without a seal, moisture can seep inside through concrete.

Shivprasad Koirala

Guest

Do plaster walls need insulation?

If your historic house has original plaster walls, you should not blow insulation into the exterior walls. Old houses with plaster walls have no vapor barrier under the plaster to stop moist air from saturating the insulation. Instead, plaster walls are designed to allow the free exchange of air and moisture.

Madara's Ghost

Guest

Do plaster walls smell?

plaster is not a vapor barrier, so any odors in the walls can get in. it's good for the longevity of the plaster since it can breathe (if it gets wet, it can dry, for instance), but it won't keep the odors out.

Matthew Scharley

Guest

Do you have to seal cement board in a tile shower?

Although most backerboards currently available won't fall apart when exposed to moisture and are somewhat water-resistant, they aren't waterproof.

To prevent moisture from seeping through to the wood or metal studs beneath the tile, a barrier or sealant must be used on porous materials..

Josh Kelley

Guest

Do you have to seal concrete after painting?

If you are painting interior concrete it is vital to seal the concrete. This will prevent moisture from seeping in underneath the paint and causing mold. Use a masonry sealer and follow the manufacturer's directions on how many layers to apply and when.

Clifton Labrum

Guest

Do you need to prime plaster walls before painting?

Painting plaster walls is just like painting any other drywall. The primer that you use is the key. You need to us the best primer for plaster walls to seal the wall because paints won't take to it evenly without a good primer.

Rawa

Guest

How concrete flooring is done?

Anatomy of a Concrete Floor This layer is covered with a vapor barrier sheet that prevents moisture from moving up into the concrete. A welded wire fabric mesh sheet is then placed over that in order to aid with adhesion. Finally, the concrete slab is poured directly onto these layers.

WitVault

Guest

How do you keep water from seeping on concrete floor?

Plastic drainage mats, or dimple mats, allow air to circulate under the flooring and provide a moisture barrier.

They also provide an insulating layer of air that separates the floor from cold concrete, reducing the potential for moisture damage from condensation or water vapor migrating through the concrete..

Pranav Hosangadi

Guest

Should you seal concrete before laying laminate?

You don't need to seal a concrete floor before installing laminate; however, to prevent moisture from the concrete floor from affecting your laminate, install a vapor barrier of polyethylene film. Install this barrier even if the concrete subfloor is covered by vinyl, linoleum, terrazzo or ceramic tile.

Bastien Léonard

Guest

Does concrete stop radon?

Remember that even several inches of concrete cannot stop radon. Some builders believe that the plastic vapor barrier under the slab will stop radon. Although it is a part of the "radon resistant" construction, it merely reduces the flow of soil gas.

dave_59

Guest

How do you seal an old concrete basement floor?

Step 1 – Remove any paints, sealers, tile adhesive, efflorescence, and oils from the concrete. Step 2 – Shop-vac the surface of the concrete removing loose or crumbling concrete, mortar, dust, and dirt. Step 3 – Seal the concrete walls and floor against moisture and water vapor with RadonSeal Concrete Sealer.

Sergey Bushmanov

Guest

Should you seal concrete basement floor before carpeting?

If you want to install carpet over your concrete floors, it is important that you properly seal the concrete slab. Without using a concrete sealer before installing carpet the concrete could potentially let in water that could lead to mold, mildew or water seepage.

xanatos

Guest

How do you seal concrete pots?

How to Seal Your Concrete PlantersStep 1 – Clean Planter Thoroughly. Before you seal the planter, it is important to give it a good cleaning. ... Step 2 – Seal Your Concrete Planter's Exterior. So your planter is now dry and ready to be sealed with a concrete sealer. ... Step 3 – Seal Your Planter's Interior.May 3, 2019

a.ak

Guest

How do you waterproof concrete planters?

How to Seal Your Concrete PlantersStep 1 – Clean Planter Thoroughly. Before you seal the planter, it is important to give it a good cleaning. ... Step 2 – Seal Your Concrete Planter's Exterior. So your planter is now dry and ready to be sealed with a concrete sealer. ... Step 3 – Seal Your Planter's Interior.May 3, 2019

Maarten Bodewes

Guest

How do you stop concrete efflorescence?

Simply sealing concrete from water penetration (using a penetrating sealer) will help prevent efflorescence. V-SEAL creates an incredible water barrier for brick, mortar, and all forms of concrete. To help prevent efflorescence, V-SEAL should be sprayed anywhere brick, mortar or cement will be exposed to water.

mahan

Guest

What temperature can concrete blocks withstand?

How thick should concrete be to withstand four hours of temperatures of 2000 degree F without degrading or failing? The concrete barrier likely will be exposed to more than 2000 degrees F. The barrier would be more than 30 feet tall and more than 30 feet long. It will be outdoors and subject to rain and other weather.

Marlon Abeykoon

Guest

How do I stop moisture in my concrete floor?

Methods Used to Stop Moisture in Concrete FloorsLow-permeance Vapor Barrier or Retarder.

A Low-permeance vapor Barrier or retarder can effectively keep below-slab moisture from reaching the flooring system.

...

Allow Natural Drying of Concrete Slab.

...

Keep Excavation Free of Water..

Ali Irani

Guest

Do you need underlay on concrete floors?

Most sub-floors will be either wood or concrete. Concrete bases need an underlay with a moisture barrier, a damp proof membrane (DPM) or a separate barrier to protect the floor from damp. If the sub-floor is wooden the choice of underlay will depend on what is being laid on top.

Rahul

Guest

Is a vapor barrier necessary behind cement board?

Cement board is heavy enough and breathable enough to take the moisture without a problem. By having the vapor barrier behind the cement board you stop the moisture going further into the wall. ... You should NOT place a vapor barrier BEHIND the backer board.

Markus Weninger

Guest

Does cement board in shower need waterproofing?

“A waterproof membrane or vapor retarder membrane must be specified to prevent moisture intrusion and protect adjacent building materials.” ~B412 Bathtub or shower with prefabricated receptor. Cement board or Fiber-cement board. Ceramic Tile. ... Consult local building code for moisture barrier requirements.”

ForceBru

Guest

How do you seal a concrete slab?

To seal concrete floors, use an epoxy sealer if you want something durable that comes in a variety of colors. For indoor concrete floors that won't be exposed to oil or grease, use an acrylic sealer, which is easy to apply. If you want to seal over concrete floors that already have a seal, try a polyurethane sealer.

cmsjr

Guest

Do I need insulation under a concrete floor?

Creating an insulation layer and a vapor barrier between the concrete slab and the ground beneath it is the best practice in insulating basement floors.

The insulation barrier will help keep warm air in, and the vapor barrier will keep unwanted moisture out..

MisterMiyagi

Guest

Is concrete a good reflector of sound?

Hard surfaces such as masonry or concrete are considered to be reflective. This means most of the noise is reflected back towards the noise source and beyond. A noise barrier without any added absorptive treatment is by default reflective.

Thomas Uhrig

Guest

Should you put a vapor barrier behind cement board?

You still need a vapor barrier with cement board, although in this case the barrier can go behind the board. Cement board is heavy enough and breathable enough to take the moisture without a problem. By having the vapor barrier behind the cement board you stop the moisture going further into the wall.

Searene

Guest

What is the purpose of a vapor barrier under concrete slab?

The use of a vapor barrier (more accurately termed a vapor retarder), having a water vapor permeance of less than 0.3 perm is frequently used to retard the flow of moisture through the slab. These vapor retarders are typically polyethylene or polyolefin sheeting materials.

Rory McCrossan

Guest

How do you insulate lath and plaster walls?

Treat Your Gutted Walls Like New Construction When you have gutted your walls, install fiberglass batting, foam insulation or dense-pack cellulose insulation from the inside. Place a 4-mil plastic sheeting vapor barrier over all three of these types of insulations.

EdChum

Guest

How do you seal plaster castings?

How do you seal a plaster statue?Seal your plaster statue with a sealant using a paint brush.Apply two more coats of polyurethane to the statue, allowing each coat to completely dry in between applications.Sand down any bubbles or uneven areas in the polyurethane coating using a fine grain, 150 to 180 grit sandpaper..

Megan Darcy

Guest

Is concrete a Vapour barrier?

Actually, no. Air barriers need to be continuous and free from holes, but vapor barriers do not need to be. Lots of vapor moves by air movement, not a heck of a lot of vapor moves by vapor diffusion. The concrete slab is the air barrier, and the ripped and torn and punctured polyethylene sheet is the vapor barrier.

Sarfraz

Guest

How do you stain and seal a concrete patio?

Stain Concrete Sealer: How to Seal Concrete Patio Let the stain concrete dry for 24 hours, then apply a sealer to keep the stain from fading. Plan on rolling on a new coat of sealer every three to four years to protect the surface.

Tim Peters

Guest

Do you need a vapor barrier under concrete driveway?

The application of vapor barrier in exterior concrete is unnecessary due to the fact that water penetration does not matter. Any slab on grade that is enclosed and on the interior of a building should have a vapor barrier installed prior to pouring concrete, especially if flooring will be applied.