Modular & Offsite Solutions

Modular and offsite construction brings design, manufacture and assembly together to improve quality, consistency and programme efficiency. To perform successfully, however, each unit or panel must maintain airtightness, moisture control and weather protection throughout factory production, storage, transportation and final assembly on site.

Proctor Group supports volumetric, panelised and other offsite systems with membrane, airtightness, vapour control and fire-performance solutions designed for factory application and repeatable installation. Combined with technical guidance and project-specific detailing, these systems help protect units from factory to site and maintain reliable performance across junctions, interfaces and completed building envelopes.

Our specialist solutions support a wide range of sectors, including:

• Healthcare including hospitals, health centres and healthcare facilities
• Private and social/affordable housing
• Purpose built student accommodation
• Education and office buildings
• Self-build projects
• Hotels

Based upon over 50 years of providing solutions and products for the construction sector we understand that a totally holistic approach is required to building design. This is equally essential in the design, manufacture, assembly and construction of offsite modular buildings.

In doing so, we consider six core aspects in the process:

• Air
• Heat
• Moisture
• Building
• Weather
• Occupants

For any building to be an energy efficient, healthy, moisture free building envelope there is a clear need to manage the balance of Heat, Air and Moisture movement throughout the process of the building’s life cycle from design, construction, completion and use.

Understanding the importance of these key elements upon the building envelope is crucial to the successful construction and operation of a building. Architects, designers, and off-site construction manufacturers must seek to understand the science behind our buildings, managing the external and internal forces, which impact on the quality of the completed building, its performance in use, as well as the health of its occupants and the wider environment.

One of the challenges facing manufacturers and developers using modular and offsite construction methods is how to ensure that the performance of any factory fitted membrane is not compromised during transportation from factory to site. The exposure to the elements of the UK climate experienced during transportation to site can in some cases adversely affect the quality of the membrane, resulting in damage due to wind, rain, and more.

The Wraptite air barrier system offers a safer and simplified membrane system and provides a fully self-adhered vapour permeable air barrier certified by the BBA and combines the important properties of vapour permeability and airtightness in one self-adhering membrane. The self-adhesive membrane is easily applied in the factory, bonded externally to the substrate, and ensures that the membrane is held firmly in place, even during transportation, maintaining the quality of the system from installation to build and completion.

• A fully self-adhered system ideally suited to offsite modular factory manufacture and transportation
• Provides total protection externally from factory to site
• Removes the requirement to provide additional wrapping of units before leaving the factory – saves time, cost, maintaining system integrity and preventing damage to the building
• Full installation process is worked on with both Proctor Group and Client working to achieve best practice.
• Already Used in conjunction with Buildoffsite Property Assurance Scheme (BOPAS) accredited systems.

Our products are backed up by a dedicated team of technical experts, able to assist at every project stage from pre-planning to on site.

We offer CAD detail reviews, installation guidance, condensation risk analysis, WUFi calculations, U-Value calculations, ground gas system designs, telephone support & more. Our products also have a range of BIM Objects & Performance Specifications.

Chris Close – Design Director at Lisset Homes

“I’ve worked with A. Proctor Group for seven or eight years, so they were our first port of call and together we found the right solution.”

George Bitters – Project Manager at Linear Design & Construct

“Applying Wraptite in the factory allowed us to achieve a perfect finish. We got no bubbles spoiling the appearance or causing concern that the performance of the wall build-up might be affected.”

Helen Wildin – Head of Sales, Ultrapanel Building Technologies

“With a system that is 40% faster and 70% lighter than traditional masonry , we’re aiming to accelerate the rapid delivery of homes, without compromising on compliance or quality – and Proctor Group are a key member of our supply chain.”

Gwen Beeken – Managing Director at Osco Homes

“The ease with which Wraptite achieves a high level of airtightness and its ability to be joined across panels was key to its selection. Applying it in a factory environment, we can be confident of the quality of the installation, and the specially provided Wraptite Tape means making the joints onsite is simple.”

Karl Ventre – Director at Starship

The self-adhesive membrane is easily applied in the factory, bonded externally to the substrate, and ensures that the membrane is held firmly in place, even during transportation, maintaining the quality of the system from installation to build and completion. Wraptite is an excellent quality product, and the self-adhesive backing gives a very neat finish.

Kenton Jones – Managing Director

“We chose Wraptite to achieve the low value airtightness we required for the module system. The benefits of having the airtightness layer externally were a huge saving in time in the factory and impressive simplifying of details to achieve the same quality results. Wraptite was installed off-site in a factory environment for speed and ease and simply taped together on-site between modules to achieve the airtightness.”

“Overall we saved time and money with Wraptite, we now have a set of high performance technical details for the airtightness in our module system which help maintain a robust quality control system.”