Some regular water contact areas, such as lakes, reservoirs, toilets, washing machines, flower beds, roofed terraces, balcony ... are likely to be higher than other area in the house. Top down is everyone knows, but also back up from the ground up by the waterproof calculations do not good. Then penetrated the basement wall, penetrating the hip between the two houses with openings, permeated by the scaffolding construction finished ...
Permeability is sometimes very obscure when seen under the ceiling patches, but on the floor does not find clues. Spotting this place, but having to resist the other, or infiltrate only one place that must fight the whole thing is often encountered. And more importantly, the waterproofing must be calculated from the design, from the raw work to not wait until the new infiltration to go against.
The effectiveness of the waterproofing solution - if considered from the beginning - will simultaneously bring many effects: waterproofing, anti-heat, anti-noise and anti-sink. The casting of double-layer roof, woven sheet with air gap in the middle, roofing slope to "cover" the roof, using steel or wood surface as the top ... all reduce the effect of direct rain, It is always anti-hot and anti-cracking roof structure. For external walls, if possible, should build two-layer thick walls, the insulation in the middle is also a combination of heat reduction. Use standard brick. The quality, type and origin of building bricks are also important to avoid the deterioration of the wall. At the joints or connections between the wall and the door must ensure the structure has a rim or just a protective rim.
For underground works, the solution of "eat solid and wear durable" always proved more effective. It is now common practice to build an underground reservoir of card bricks, soak in cement water and paint thoroughly, then place the water tank inside, on the cover of the welded concrete cover with pusher and pump for maintenance. rinsing periodically. This is to avoid water penetration rather than waterproofing. Of course, this is costly, but much more secure and hygienic, and does not cover the area. If the building on weak ground, the first floor should be poured high quality concrete to either reverse waterproofing or absorbent by groundwater, both against collapse so when the house next to the construction or car outside shocking