Systems

Sheet membrane systems

Factory-controlled thickness across large areas — with performance decided at the laps, corners, penetrations and terminations.

Where sheet suits

Appropriate applications

Sheet membranes are often suited to larger, less congested areas where a consistent, verifiable thickness matters and where the build-up allows protection to be installed promptly. Congested plant decks with dense penetrations may suit a liquid system instead. Selection is always project specific and made against the specification and manufacturer documentation.

01
Substrate preparation
Cleaning, profiling, drying and priming to the manufacturer's stated requirements before any sheet is unrolled.
02
Sheet layout
Set out so laps fall away from water flow and sheet lengths suit the deck geometry and access.
03
Laps
Side and end laps formed to the specified width and checked along their length before the next sheet lands.
04
Corners
Internal and external corners pre-formed or reinforced rather than stretched into place.
05
Penetrations
Pipes, fixings and services collared and sealed before the field sheet is completed.
06
Terminations
Mechanically fixed or chased and sealed at the height required by the specification.
07
Upstands
Turned up to compliant heights at walls, thresholds and parapets and supported behind finishes.
08
Drainage interfaces
Sheet dressed into outlets and sumps so water enters the drainage system, not the lap.
09
Protection
Protection boards or drainage cell installed promptly to prevent damage by following trades.
10
Overburden / finishes
Screed, paving, soil or tiling placed only once testing and inspection hold points are complete.

Systems used

ARDEX WPM 1000

ARDEX WPM 1000 is one sheet membrane system VVS has installation experience with. Product performance, substrate requirements, lap widths and detailing are as set out in the manufacturer's current technical documentation for the specific application.

Manufacturer record

ARDEX

Systems used: WPM 1000 sheet membrane, Liquid-applied membranes, Cementitious membranes

Approved or accredited applicator status is only published where VVS holds current evidence supporting that exact wording. No such claim is made here.

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