Terrace waterproofing

Waterproofing the terrace above the living area

Do-it-yourself terrace waterproofing

Terrace waterproofing under tiles

Roof terrace waterproofing

How to waterproof a terrace? | Terrace waterproofing on tiles

In order to effectively select a waterproofing system for your terrace, you need to decide on many factors, even at the design stage, with all the wishes and possibilities of the customer.

Will it be a new construction of an object or is it a repair of an old site, an open exploited roof?

 

Terrace board for an open terrace

Standard questions at the design and planning stage

• What will be the finish?

• Exploited or not exploited terrace?

• Is there a need to insulate the terrace?

• From what materials will the supporting structure of the terrace be made?

• Open or closed terrace?

• How to waterproof a terrace?

 

Terrace waterproofing on tiles

When choosing the right waterproofing for the terrace, the first thing you need to decide is what will be the finish on the floor?

Classic types of finishing coating for the terrace

• Ceramic tile - terrace waterproofing on tiles.

• Paving slabs.

• Natural stone.

• Natural or artificial turf, green roof.

• Terrace board.

• Raised floor.

• Polymer floors.

• Concrete.

• Wooden flooring.

 

Raised floor terrace

In the construction market, there are a large number of types of finishing flooring.

Need an understanding of how you will operate the terrace?

These will be family gatherings on summer evenings or large, large-scale events, weddings, birthdays, corporate parties, all year round and with a large number of guests.

Basic requirements for terrace flooring

• UV resistant.

• Frost resistance.

• Wear resistance.

• Strength.

• Waterproof.

• Anti-slip.

• Resistance to deformation loads.

 

Terrace tiles

Consider one of the popular options for finishing, ceramic tile or natural stone.

Terrace waterproofing under tiles 

For effective waterproofing, you need to consider the whole pie as a whole.

A common pie on the terrace can be varied, so consider the classic version.

1. Bearing concrete slab.

2. Roll waterproofing or seamless polymer waterproofing.

3. Insulation, high density, if you want to insulate the ceiling.

4. Cement-sand screed, with the addition of special additives for plasticity, water resistance and reinforcement with polypropylene fiber, with a mandatory slope device, for drainage.

5. Polymer-cement elastic waterproofing.

6. Flexible cementitious adhesive for ceramic tiles or stone.

7. Elastic, UV -resistant grout for tile joints .

 

Terrace tiles

The first and main layer of the waterproofing coating, over the supporting concrete slab, will hold back the penetration of moisture, at the last line, if the top layer is damaged.

Also, it keeps moisture from getting into the room during the installation of insulation and screed.

Traditional types of terrace waterproofing

• Bitumen-polymer membrane.

• PVC non-reinforced membrane.

• Liquid rubber .

• Elastic bituminous mastic.

• Polyuria/Polyurea.

• Polyurethane mastic.

• Polymer-cement waterproofing.

• EPDM membrane.

• Spiked HDPE membrane.

 

Bitumen-polymer roll and mastic waterproofing for the terrace

The second layer of waterproofing is laid on the screed. This layer is necessary to protect it.

One of the main problems with the penetration of moisture into the interior of the room, when choosing tiles for a terrace, is the presence of seams.

Even the best grout can crack or shoot off, thereby opening the tile joint for moisture to penetrate under the tile.

Water, getting into the screed, gradually destroys the base, reduces the bearing capacity, as a result, subsidence of the tile, shooting of the tile.

 

Screed repair on an open terrace

For waterproofing on a cement-sand screed, as a rule, a polymer-cement, elastic, seamless waterproofing mixture is chosen.

After mixing with water or with a polymer part, a dry filler, a creamy composition, has high adhesion to the base, as well as to cement glue, forms a monolithic protective system, with the possibility of blocking the formation of cracks in the base, up to 1 mm.

 

Waterproofing under decking

Terrace waterproofing under wooden flooring or raised floor

Here you can repeat the classic pie, only for finishing waterproofing, use under the board:

• uv-resistant roofing pvc or tpo membrane;

• polymer-cement or polyurethane mastic;

• acrylic or bituminous mastic;

• silicone mastic or polyurea.

Since a decking board or wooden flooring transmits the sun's rays, UV resistance is an important criterion when choosing a protective coating.

 

Terrace waterproofing with bituminous mastic

Terrace waterproofing under paving slabs

Install of a green exploited terrace

When waterproofing a terrace under paving slabs or under a natural lawn, it is required to provide for the arrangement of a drainage system.

Moisture will enter at the seams of the pavement, natural stone or lawn.

Therefore, along the waterproofing layer, a spiked membrane with geotextiles is laid.

For the efficiency of drainage, a spiked HDPE membrane is used, on which textiles are soldered.

The textile is tightly stretched and does not fall between the spikes.

When soil and tiles are loaded, a gap remains between the spiked protective membrane and the textile. 

Moisture enters between the seams, penetrates through the textile, enters the spike and, due to the previously arranged rake during the arrangement of the screed, leaves through the drain funnels into the drainage system.

Also, the spiked membrane protects the waterproofing layer from mechanical damage and distributes the pressure of the floor covering.

 

Green terrace

Polymer waterproofing of a concrete terrace

The use of polymer waterproofing is due to the "Two in One" effect.

The waterproofing layer is also a finishing floor covering.

 

Seamless polymeric liquid waterproofing of the terrace

Types of polymer coatings for a concrete terrace

• One-component polyurethane waterproofing.

• Two-component polyurethane polymer coatings.

• Polymer-cement elastic mixture.

• Polyuria/Polyurea.

 

Elastic polymer waterproofing of the terrace

Requirements for polymer waterproofing for a terrace

• UV resistance.

• Wear resistance.

• Decorative coating.

• Elasticity.

 

Terrace waterproofing polyurethane

Requirement for a base for a polymer waterproofing 

• Concrete M 250 and more.

• The base must be solid, dry, dust-free. 

• Cracks and pits in concrete, sealed and repaired with concrete repair mortar or sealant.

• The average thickness of the waterproofing layer is 2 mm.

 

Concrete terrace

Concrete pavement for concrete terrace | Terrace concrete

Concrete can also be used as a patio finish.

When constructing a concrete finishing base, it is necessary to provide for the water resistance of concrete, high-quality compaction of the mixture, proper maturation of concrete, cutting of temperature and expansion joints, followed by sealing with a sealant or a deformation profile.

On a concrete terrace, you can always apply a protective waterproofing coating.

 

Waterproofing a concrete terrace

For waterproofing under concrete, all types of waterproofing can be considered, but with the obligatory protection of a spiked membrane with geotextile for drainage, in case of concrete damage and cracking.

 "Waterproof your terrace effectively"

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