Kemseal MGP is a multi-grade moisture cure, polyurethane
waterproofing membrane which when fully cured forms a permanently flexible
elastomeric waterproof membrane lining to most building surfaces including
reinforced concrete, block work, brick work, cement render, plaster-board,
fibre-reinforced cement sheets, particle board flooring and plywood etc.
application- liquid applied
no joints or cracks
recoat in 2-4 hours.
Easy to Apply Formulation.
Vertical and Horizontal Application.
Balconies and Decks
Roof Tops (non-exposed)
COVERAGE: 1.5 Litres/ m2 SHELF LIFE: 6-12 months in cool
TOUCH DRY: 4-8 hours
RECOAT: 4-8 hours
SOLVENT RESISTANCE: Not Resistant
WEATHER RESISTANCE: Should be protected from sunlight-
may be top coated with Kemseal S- 80 or other compatible UV protective coating.
TILING: Kemforte MGP may be tiled over when fully cured.
Internally, broadcast clean dry sand into top coat. Use compatible two- part
cement based adhesive. Do not use solvent based adhesives/sealers over KEMSEAL
MGP. Externally, provide slip sheet and sufficient measures for full allowance
of expansion and contraction in overlaying tiles and toppings– particularly
important with sheet flooring externally to prevent damage to the membrane.
Multi-Grade Polyurethane Waterproof Membrane
concrete etc. Acid etch if necessary. Concrete must be a
minimum strength of 20 mpa and have cured a minimum of 28 days if Kemseal WBE
Primer is not used. Surface must be dry. Fill all screw holes, cracks and voids
with Kemseal PU Sealant. Install leak control flanges around all pipe
PRIMER: Kemseal MGP is often self-priming when used on
internal surfaces eg. villaboard, chipboard, sound concrete, block work.
Absorbent surfaces may require priming with Kemseal MGP thinned with 20 - 50%
Xylene< Kemseal SP1 solvent primer or Kemseal WBE applied at 6 m2/Litre.
Prime damp areas and areas subject to rising damp with Kemseal WBE.
Plastic/Plumbing fittings shall be primed with Kemseal WBE. Allow to fully cure
prior to membrane application.
DETAILING: Apply a minimum 12mm fillet of Kemseal PU
Sealant between all horizontal to vertical junctions such as floor to wall/hob
and around pipe/column penetrations. Around rain water and floor waste outlets,
apply membrane to 1.5mm thick reinforced with polyester fabric 100mm wide
across join. Where angles are installed such as across bathroom doorways or
under shower screens (hobless shower) angle is to be adhered into a bead of
Kemseal PU Sealant. Contact Kemforte for full installation procedures for
bathrooms. Refer to Kemforte for specification on expansion joints.
REINFORCEMENT / BONDBREAKERS: A reinforcing fabric and/or
bondbreaker tape, may be utilized over the following areas: Expansion joints,
cracks, footing/floor to wall junctions, shower tray and hob, joints in sheet
flooring, vertical corners above shower tray, around floor/wall penetrations,
down into floor waste pipes and any other area where movement will occur.
Reinforcement may also be required over voids in off form concrete.
Reinforcement shall be laid into the wet base coat and immediately over coated
and worked in carefully to fully saturate fabric.
APPLICATION: To the prepared surface, apply Kemseal MGP
by brush or roller in one or more coats to achieve a minimum dry film thickness
of 1.2mm. Do not apply thicker than 1.2mm wet film build/coat. Turn membrane up
at walls and penetrations and down into drainage outlets. When dry, check for
pinholes or misses and rectify if necessary. Re-coat within 24hrs. If membrane
becomes dirty between coats, clean with xylene to ensure adhesion. Allow 24
hours to dry before covering.
PRECAUTIONS: Do not use Kemseal MGP membrane in
any situation beyond its physical limitations. Do not apply above 42oC or below
8oC ambient temperature. Wash equipment with xylene before dry. Do not cover
membrane until fully cured. Protect membrane against damage before and during
backfilling, tiling or covering. Where used externally, Kemseal MGP should always
be protected from UV exposure either by top coating with Kemseal S80 or
covering with tiles, sand-cement topping or soil etc. When used externally,
provide slip sheet of polyethylene plastic sheet over membrane prior to
sand-cement topping, in a manner to allow for expansion and contraction of
overlaying topping to prevent damage to membrane