Product Solutions for Housebuilders & Developers SPECIALIST MEMBRANES, THERMAL INSULATION & ACOUSTIC FLOOR SOLUTIONS

PRODUCT SOLUTION PROVIDERS

A. Proctor Group Experts in membrane systems Housebuilders and developers are facing increasing requirements to achieve compliance with ever tighter standards and building regulations, coupled with the demand to design and build homes and properties which are energy efficient, moisture free and provide a healthy living environment for the occupants. This necessitates a clear need to manage the balance of Heat, Air & Moisture management (HAMM) throughout the process of the building’s life cycle from design, construction, completion and use. The importance of these key elements upon the building...

Construction membranes – applications in house building Already a trusted brand with housebuilders and contractors, the A. Proctor Group product portfolio includes such familiar names as Roofshield®, the high quality, unique air and vapour permeable pitched roof underlay, a world recognised brand synonymous with the highest performing roofing solutions, and Wraptite®, an external air barrier to solving the problem of reliably achieving airtightness in buildings. Timber frame construction Structural Timber Association STA issues the following guidance (STA Advice Note 18): A breather membrane...

Standards & Building Regulations The key guidance on meeting the requirements of Building Regulations for England, Ireland and Wales, and Building Standards (Scotland) relating to ventilation, thermal efficiency, moisture and condensation control is outlined within the Approved Documents and Technical Standards below. For specific advice on any of these please contact technical support on 01250 872261. Ventilation • Part F1 Means of Ventilation (England & Wales) • Building Standards Section 3 Environment (Scotland 2017) • Technical Booklet K - Ventilation (N. Ireland Oct 2012) • Technical Guidance...

External Airtight Membranes - an Introduction Why are airtight membranes needed? Air leakage through cracks, gaps, holes and improperly sealed elements such as doors and windows can cause a significant reduction in the performance of even thermally insulated building envelopes. Housebuilders have a key role to play in the installation of effective air barrier systems which have become essential in achieving the most effective means of controlling and reducing air leaks. As thermal insulation requirements have increased over the last few years, the proportion of energy lost through air leakage...

WRAPTITE® The self-adhered nature of Wraptite allows for a simple and fast installation process, minimising the use of additional sealants and tapes, and requiring no specialist contractors to achieve a robust result. This one-step solution provides both a damage resistant air barrier layer and effective secondary weather protection in one installation process, allowing a wind and watertight envelope to be achieve more quickly than using traditional methods. Wraptite airtight membrane makes a significant contribution to a building’s thermal performance by preventing lateral air movement, but...

Comparative test of Fireshield (left) with Standard Class B, s1-d0 membrane (right) Fire Performance & Breather Membranes In selecting a membrane it is important that performance is not compromised and meets the requirements of both Approved Document B: Fire Safety and BS5250 the Code of Practice for Condensation Control. Housebuilders should understand that some European membrane products whilst quoting A2 ratings do not breathe sufficiently to comply with BS5250, meaning the use of these membranes in the UK climate could make the building unhealthy and result in a much greater risk of condensation...

Fire Performance & Breather Membranes PROCHECK® FR200 Procheck FR200 is a fire retardant vapour control layer used in roof and wall structures in both new build and renovation projects. Procheck FR200 has a Reaction to Fire classification of B-s1, d0 which provides assurance of fire performance for the structure. Procheck FR200, air and vapour tight membrane improves energy efficiency and reduces the condensation risk, and has a vapour resistance of Sd 44m. PROCHECK® A2 Procheck A2 is a laminated glass fibre and foil composition protected by a clear lacquer. This clear surface gives Procheck...

Pitched Roofing New Build Refurbishment Extensions ROOFSHIELD® Roofshield is an air and vapour permeable pitched roof underlay for installation beneath tiles and slates. It is highly water resistant, providing a secondary barrier to the ingress of rain, wind and snow and reduces interstitial condensation. It has been made to the same high standard for over 20 years, and has consistently met the evolving demands of the roofing industry to be the first choice for most roofing contractors. It complies with BS5534. The underlay’s reliable performance has been demonstrated in the toughest locations...

Reflective Membranes - an Introduction By utilising high performance low emissivity coatings to restrict heat flow, the A. Proctor Groups’ range of reflective construction membranes allow the thermal performance of timber frame walls to be enhanced with little or no increase in thickness. As well as thermal enhancement, these membranes offer the same excellent weather protection and moisture vapour management characteristics as the conventional membranes. REFLECTASHIELD® TF 0.81 Reflectashield TF 0.81 is a water resistant, non-woven polypropylene foil faced laminate with a unique patented three...

Introduction to Vapour Control Layers Installed on the warm side of the heated envelope, vapour control layers restrict the ingress of moisture into the building fabric by limiting both vapour diffusion and air leakage. The correct specification of vapour control layers is closely related to the anticipated moisture loading and maintaining the integrity of the membrane is ciritcal. The A. Proctor Groups’ range of vapour control layers covers all building uses, and are reinforced for enhanced durability during construction and throughout the lifetime of the building. Procheck 300 is a lightweight,...