Basements – Technical Information

Oldroyd Xv Clear

Cavity Drainage Membrane for use on Interior Floors and Walls

Oldroyd Xv Clear is a semi-transparent, studded cavity drainage membrane manufactured from polypropylene. It is specifically designed for application to damp / contaminated internal floors and walls , and is particularly useful in basement waterproofing / conversion applications. It is highly suited to waterproofing Victorian basements as it does not rely on the soundness of the underlying substrate for its effectiveness.

Oldroyd Xv Clear is applied to walls and ceilings by means of special sealed fixing plugs (Oldroyd Brick Plugs), while on floors, there is normally no need for any form of fixing. The semi-transparent nature of Oldroyd Xv Clear makes it easy to locate suitable fixing points (e.g. avoiding soft mortar beds).

Oldroyd Xv Clear can be covered with plasterboard, dry lining, screed, or a floating timber floor. When used as a basement waterproofing system, Oldroyd Xv Clear should be used in conjunction with the Aquadrain perimeter drainage system and the Submarine Sump System .

The Oldroyd range of Cavity Drainage Membranes, are manufactured in Norway under an ISO9001 / 14001 quality and environmental management system. They are produced from high-strength polypropylene using a special, temperature-controlled manufacturing process. This results in an exceptionally straight, tough membrane which does not suffer from the “banana-ing” and “rucking” which cause problems when installing other cavity drainage membranes. Oldroyd Xv Clear is British Board of Agrement (BBA) approved and available in 2.08 x 20m (41.6m 2 ) rolls.

The Sentry Sump Systems

The Sentry Sump Systems have been designed to compliment the Oldroyd Xv studded membrane waterproofing system for waterproofing underground structures and the Aquadrain perimeter drainage system . It was developed by Safeguard in conjunction with pumping solutions specialists, Edincare.

When it is known or anticipated that free water will be present behind the Oldroyd Xv membrane, the installation design should incorporate adequate provision for its disposal. This will normally require the installation of one or more sump pumps.

The standard system comprises of a specially designed sump chamber complete with double-sealed manhole cover, high capacity Ama Drainer 303 240V sump pump and a high-level mains/battery alarm incorporating a single float switch. Versions are also available with dual pumps, 12V battery back-up pump and even telemetric dialers in areas of extreame sensetivity. Benefits include:

Tough
The pump chamber is well engineered and manufactured in strong, impact resistant polyethylene. Double-seal access cover suitable for pedestrian loading.

Simple to install
Pre-formed inlet/outlet holes to directly connect drainage channel and discharge pipe. Pump can easily be disconnected for cleaning and maintenance.

High Flow Rate
50mm diameter internal pipework allows maximum flow rate from pump. 200 litre per minute flow rate (based on 2m head of water).

Hygienic
Smooth internal walls aid the hygienic disposal of groundwater for the avoidance of smells and septicity.

High Capacity
Extra large 100-litre capacity chamber.

Cementitious Waterproofing Slurries (Vandex system)

The Vandex Basement Waterproofing System – is a multi-coat waterproofing system that is both durable and versatile. The main coating material, Vandex BB75 , is a cement-based powder which is mixed with water and applied to walls, floors, and ceilings by spray or trowel. It sets to form a bond with the masonry substrate, creating an impervious barrier to the movement of water.

A sand-cement render is applied to the walls and a bottle cove formed at the wall-floor junction. Two coats of Vandex BB75 are then applied to the walls and floor. Finally, a screed is applied to the floor and a suitable plaster is applied to the walls.

It is very important to note that not all substrates are suitable for both these methods of waterproofing and it is essential the property is surveyed by a qualified structural waterproofing surveyor who will design the system most suitable to the individual circumstances. Call us or click here to arrange a specialist waterproofing survey.

For any queries on basement waterproofing solutions or to book a survey please contact us

Our staff will work closely with you from survey stage, right through to the successful completion of the contract.