How to waterproof a terrace, guide to prevent leaks and dampness

Ah, the terraces! Spaces where we enjoy moments of relaxation, outdoor dinners and sunny afternoons. However, they can also become a nightmare if they are not well waterproofed. Have you ever had leaks in your home coming from your terrace? If so, this guide to waterproofing a terrace is for you. Here I will show you step by step how to waterproof a terrace, with tips and tricks And yes, we're going to keep it simple, so that all you have to worry about in the end is enjoying your outdoor space!

Why is it important to waterproof your terrace?

Before going into technical details, it is essential to understand why waterproof a terrace. Terraces are exposed to inclement weather: rain, sun, wind... Even frost in winter! If we do not protect them properly, water can be filteredThe damage to both the structure and the interior spaces of the house. Moisture problems not only deteriorate the floorThey can also affect air quality and the health of those living in the home, so it's not just a question of aesthetics!

When is the best time to waterproof?

The best time to waterproof a terrace is in spring or summer.However, any time of the year is good if there is no rain forecast for the next 4 to 8 days (depending on the surface to be treated and the time you use to carry out the work). Thus, the products will dry faster and you will get an optimal result.. If you live in an area with very cold winters, make sure you waterproof before the first frost arrives..

Steps prior to terrace waterproofing

Before applying any product, it is crucial that you prepare the surface well, especially when waterproofing a terrace.. Failure to do so may reduce the effectiveness of the waterproofing.

• Clean the surface: Remove any dust, leaves, debris or dirt that may have accumulated. If you have mould or moss, remove it with a mixture of water and bleach.
• Repair cracks and fissures: If you find small cracks in the floor or walls of the terrace, fill them with a special mortar. If the expansion joints are in a bad state, repair them with Masitec Flex W. This is key to avoid future leaks.
• Clear the area: If you have furniture or plants on your terrace, it's time to move them! You need space to work comfortably and to make sure every corner is well protected.

What waterproofing products can you use for your terrace?

Today, there are several types of waterproofing on the marketbut they are not all the same and are not suitable for all surfaces, it is important to take into account the intended use of the terrace.It is not the same for occasional use as it is for continuous use.

What types of floor achieve the correct grip of the waterproofing?

It is important to to be clear whether our floor is suitable for the application of waterproofingall porous floors can be waterproofed with liquid textured products, concrete floors, red tile, rasilla, terracotta, terracotta, etc, there are very few liquid products that work long term on non-porous substrates.such as tiles, stoneware, ceramics, metallic, asphalt fabric, etc. Always consult the manufacturer if you plan to waterproof on this type of flooring..

Elastic waterproofing with fibres

One of the star products for waterproofing terraces is the Imper Fibra by Tecno Prodist. This type of waterproofing paint contains built-in fibres that give it greater strength and elasticity.The advantage? It adapts to the natural movements of the structure, avoiding cracks. The perfect option for occasional use of the terrace.

Polyurethane membrane

If you're looking for something with even greater durability and strength, the Imper Polyurethane by Tecno Prodist is your best option. This product adheres exceptionally well to uneven surfaces and is ideal for extreme climates.It is highly resistant to temperature changes and UV radiation. In addition, as it is an elastic membrane, provides long-term protection. Perfect option for continuous use of the terrace.

Termoimper Antigoteras

If you are looking for a quality waterproofing, good elasticity, resistance and which also provides thermal insulation, Tecno Prodist anti-damp proofing thermoimper this is your best option, you will get a good waterproofing and it will also insulate thermally. your home both in summer and winter, a highly recommended option for attics, houses and villas with thermal insulation needs. Recommended for medium-use terraces, it can be applied on almost all types of substrates (if in doubt, please consult Tecno Prodist's technical department).

Step by step, how to waterproof your terrace

Now that we have the products clear, and the preparation and cleaning of the terrace, let's get to work! Here are the essential steps to ensure that your terrace is perfectly waterproofed.

First coat of waterproofing

With the floor dry and the primer ready, it is time to start with the first coat of waterproofing.. If you have opted for the Imper Fibre from Tecno Prodist, use a thread roller, e.g. a doormat roller or a microfibre roller. This fibre-integrated product has the advantage of covering very wellso be sure to spread it in thin, even layers.

Second layer, the reinforcement

Once the first coat is completely dry (this may take 6-8 hours depending on the weather), apply a second coat of product. It is recommended to apply the waterproofing in cross directions with respect to the first coat to ensure better coverage and to avoid any weak spots.. If you have chosen Thermoimper anti-damp proofing apply a third coat 6 h after the second coat to achieve an adequate thermal result.

Check joints and critical points

On terraces, the joints between the floor and the walls are critical areas for leaks. If you have chosen a polyurethane membrane such as Imper Poliuretano by Tecno Prodist, be sure to apply an extra layer at these points to ensure full protection. Remember to apply the waterproofing also on the baseboard or vertical wall up to a height of about 20 cm.The floor to wall junction is a weak point for leaks.

Final drying and commissioning

It is essential to respect the drying times indicated on the packaging. of the product you use. Patience is key in this process. Only when the last coat is completely dry (allow 2 to 4 days) will you be able to enjoy your renovated terrace again.

Additional tips for durable waterproofing

• Avoid rainy days: Although it may seem obvious, make sure there is no rain in the forecast on the days you will be working on the terrace.
• Periodic maintenance: Even if you have waterproofed your terrace correctly, it is advisable to check your terrace from time to time, especially after very harsh winters or periods of heavy rainfall.
• Don't skimp on quality: Sometimes it is tempting to choose cheaper products, but in waterproofing, quality pays off in the long run. Opt for long-lasting and recommended solutions such as those mentioned above.

Frequently asked questions about terrace waterproofing