How to waterproof a wall: all instructions forwaterproof a wallmaking it resistant to water infiltration and humidity.
When it comes towaterproof a wall of wood, the market offers us thermosetting resins or ad hoc products such as marine plywood; the speech does not change when you wantwaterproof a masonry wall (concrete, cement ...), here too, the construction sector is not lacking in materials and products ready for use.
Forwaterproof a wallit would be necessary to act at the moment of realization, spreading a polyethyl sheet or a bituminous sheath able to make a water repellent wall. When this step does not take place during the construction phase, it is necessary to run for cover with interventions ofwaterproofingin the aftermath.
Products are used forwaterproof a wallwhen the problem ofrising damp and if you notice the classic symptoms of infiltrations such as localized swellings on the walls, paint flaking and the appearance of mold.
How to waterproof a wall with insulating resins
To makewater repellent a wallit is possible to act from the outside by injecting a specific product capable of creating a sort of capsule designed to prevent soil moisture from penetrating the wall. If the problem is caused by rising damp, just act on wall external for a height from the ground of 100-120 cm, in fact it will not be necessary to treat the wholewall.
Get yourself a hammer drill. Drill a series of holes on the outer wall, in a horizontal sequence and at a distance of 5-7 cm from each other, through which to inject the productwater repellent.
The two alternatives
When purchasing the water-repellent liquid, it is possible to buy real kits that are very comfortable to use. To make application even easier, it is possible to use special sleeves to be fixed to the wall and to be filled with liquidwater repellent. Who does not want to fix the sleeves and fill them, can directly saturate the wall through the holes made with the drill, in this case it will be necessary to buy container tubes similar to those of silicone that are used with the special gun. With this "gun" it will be necessary to fill every hole.
The holes must be drilled at a height of 20 cm from the ground and with a downward inclination of about 15 °. The depth of the holes must correspond to about 1/2 of the wall to be treated. When drilling holes, be careful to remove all dust generated by drilling: the hole must be well clear of debris when applying the materialinsulating.
The operation must be repeated after 24-36 hours until the liquid level no longer drops (if you have opted for sleeves), or if the insulating liquid is no longer able to penetrate into the hole ( if you have chosen silicone guns).
In both cases, the insulating product you injected is based on resins capable of triggering a chemical reaction capable of creating a horizontal water-repellent barrier that will block rising damp.
How to waterproof a wall in a simple way
Usually, for the use of insulating resins, it is advisable to contact an expert who will proceed using special pressure machines. Who prefers the do-it-yourself can try to make the wall waterproof with special pastes easier to use. Also in this case we will see how to act from the outside while those who want to waterproof a wall from the inside and eliminate the problem ofhumidity in the house and mold, you would do well to read the advice given in the article Mold on the walls, especially in the paragraph dedicated to products for internal use.
The water-repellent pastes
There are water-repellent products on the market that are easy to apply because they are sold in the form of a paste. This material guarantees a deep penetration suitable forbrick, stone and concrete walls. We recommend using water-repellent pastes especially for the public who do not have a great deal of experience with the works ofdo-it-yourself. In this case, the application is simple.
- Purchase a water repellent paste.
-Get a roller or a brush, get a brush and good will.
-Clean thewallto be treated by brushing it carefully.
- Use a roller or brush and apply as many layers of paste as recommended on the purchase package.
Which pasta to choose?
The best protective pastes offer a good yield even with a single pass, an example is Stormdry Protective Paste, also tested by the University of Portsmouth; Portsmouth tests have found that a wall insulated from moisture with a product similar to the one mentioned can allow significant energy savings on domestic heating. Stormdry water repellent paste is for sale atAmazonat the price of 228 euros (with free shipping) for a 5-liter jar capable of effectively treating an area of about 30 square meters.