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Foundation

August 12, 2017 18:06

Roll basement waterproofing

roll waterproofing the basement - a popular and effective way to seal section of buildings which consists of a single waterproofing carpet from rolled materials.

Roll basement waterproofing

Roll basement waterproofing

There are several types of roll waterproofing:

  • Waterproofing by means of back-lining roll materials: tar paper, glassine, Stekloizol.Installation of such materials by means of stickers several layers of material on the protected surface.Sticker by using special mastics or adhesive layer;
  • Waterproofing pontoon method.To perform its intended rolled material coated with bitumen or polymer layer which must be heated during installation using a gas burner.Melted, this layer provides good adhesion to the substrate.
  • Waterproofing via diffusion film membranes, providing not only protection from external moisture foundation, but also diversion of vapor from inside the building, so that the foundation retains its strength for years to come.
Waterproofing basement Technonikol

basement waterproofing Technonikol

first two types of roll hydroprotection also called back-lining waterproofing of the foundation.The technology of their performance varies depending on the type of web material.It boils down to a few steps:

  1. Surface Preparation: clean from dirt and dust, surface smoothing, rounding corners and sharp edges.
  2. primer using special primers.
  3. Application layer of mastic or varnish for better adhesion to the surface of the web material.
  4. Installation of back-lining insulation: gluing several layers of roll waterproofing.
  5. final layer waterproofing mastic or varnish if necessary.
  6. Construction of a protective layer of brick, concrete, or insulation of the foundation.
  7. device drainage and backfilling.
  8. device and waterproofing of the blind area.

detailed technology of work is given in the article "Okleechnaya basement waterproofing."

Membrane roll materials

roll waterproofing technology using membrane film is relatively new, it is fast performance, good quality protection of ground and rain water, resistance to shrinkage of the foundation.Materials for horizontal and vertical waterproofing different.

For hydroprotection vertical external walls of the basement, experiencing stress from the ground, use the profiled membrane, which has the ability to distribute pressure evenly across the surface of the foundation.The projections are arranged as spikes on the outside of the material and protect the inner membrane from damage.In addition, the surface of the studded and condenses moisture through gaps and leakage from fitting soil flows into a drainage device.For horizontal hydroprotection used smooth film, its purpose - to prevent capillary rise of groundwater on concrete pores.

membrane film editing technology is somewhat different: studded membrane for waterproofing vertical fastened with metal elements with PVC coating, fixing them on the wall and the foundation privarivaya them film with a hair dryer building.Smooth film for horizontal sealing strips are laid overlapping and welded with hot air.

membrane films mount technology

membrane films mount technology

vertical roll waterproofing technology

  1. Prepare base: eliminate defects, cracks, remove traces of bitumen, greases, foam.Sharp projections protruding rebar cut and polished.If the surface of the concrete foundation has a strong pollution, it is necessary to stick a layer of geotextile.
  2. Install fillet on inside corners or reinforce them with a waterproofing tape and mastic resin.
  3. on the foundation surface is attached plastic roundels - the structure to allow for installation of the web with the help of hot air welding.Distance between Rondel: 1-1.5 meters horizontally and 2 meters vertically.
  4. Produce cutting of the web material, not forgetting the allowance at the weld, it must be at least 10 cm.

    Cutting roll material

    Cutting roll material

  5. Material roll sealing is secured by spot welding to the roundel, used for this purposeconstruction hairdryer.The air temperature is chosen empirically, achieving high-quality welding, resistant to tearing.Joints strips further boiled with continuous double seam weld gap between the strips 10-20 mm.
  6. smooth membrane surface of the web material glued geotextiles using a contact adhesive to protect against damage.Profiled, studded or material additional protection is not required.

technology horizontal roll waterproofing

  1. Substrate Preparation for waterproofing horizontal roll should be more careful, because the adhesion of the membrane to the ground and the concrete screed in this case, more complete, and point effort in conjunction with large irregularities may damage it.If the membrane is designed to protect the foot of the basement from nearby groundwater, it is placed on the prepared filling.Site clearing, cut fertile soil, level.Mark out the area, then perform filling it with sand, carefully leveling and tamping it.
  2. on compacted sand cushion laid geotextile layer with a density of not less than 400 g / m2.Overlapping strips geotextile - 15 cm, the material at the seam to be welded with hot air.

    Laying the geotextile layer

    layer Laying geotextiles

  3. laid on geotextile membrane film so that the overlap is 10 cm. Carefully clean geotextile strips in place connection.Welding geotextile produce special welding machine or
    The process of cutting and stacking of roll waterproofing

    process the cutting and stacking of roll waterproofing

    manually using the hair dryer and the building of a solid Teflon roller, which is rolled heated film.

  4. welding is done in the form of a double seam: welding band of not less than 15 mm, the air pocket and the second band 15 mm welding seam ends sealed.This is necessary for the subsequent verification of the weld strength.welding modes are selected empirically, depending on weather conditions and type of membrane web material and tested for control samples.
  5. After welding web material check the quality of the weld, which pierce the material is connected to the compressor and it is injected into the weld air.The pressure must be kept for at least 20 minutes, otherwise looking poor welding place with soapy water, and further it is glued.In place of a puncture later glue patch.

    Roll seam welding process

    roll seam welding process

  6. top of the web material is laid another layer geotektsilya with a density of 500 g / m2, intended to compensate for the load and protect from damage.geotextile and welded joints hairdryer.

    Checking weld strength

    Check weld strength

  7. Over geotextile lay polyethylene film at least 200 microns thick.The film prevents the penetration of the solution into the pores of the concrete and geotextile provides a sliding layer, which, when ground motions prevents damage to waterproofing.Film Strips are glued on both sides adhesive tape mounting.
  8. top of waterproofing concrete floor is poured, completing it in accordance with the foundation slab casting technology.

Membrane roll materials are durable, virtually waterproof and resistant to mechanical stress, which makes them well-founded choice for basement waterproofing.