HAMM Principles

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

Understanding the importance of these key elements on the building envelope is crucial to the successful construction and operation of a building. Architects, designers, and building product manufacturers must seek to ensure that they fully 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 it’s occupants and the wider environment.

The A. Proctor Group Ltd, a family owned company in its fourth generation, has been providing solutions and products to the construction industry for over 50 years. They have been developing vapour permeable membranes and vapour control layers for over 25 years, and can provide condensation control and air barrier solutions for all areas of the building envelope, across a variety of projects.

HAMM Content

The HAMM Principles Explained

Get an in-depth explanation of the principles behind Heat, Air & Moisture Movement in this comprehensive article.

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Air & Vapour Permeable Membranes Explained

Understand the differences between air & vapour permeable membranes, and where they should be applied.

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WuFi & BS5250

WuFi calculations replace the traditional Glaser method in some areas of the new BS5250 condensation control regulations.

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HAMM Products

Wraptite

Wraptite is an externally applied, self-adhered air tight membrane that consistently achieves excellent airtightness results.

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Roofshield

Roofing breather membrane with superior air & vapour permeability. BBA Certified for non-ventilated warm & cold roofs.

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Procheck FR200

Procheck FR200 is used as a fire retardant vapour control layer in roof and wall structures in new build and renovation projects.

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Frametite

Frametite system offers a cost effective two component external solution to the problem of construction airtightness.

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Reflectashield TF 0.81

Class leading reflective breather membrane with an R-Value of 0.81 m2K/W. Reduces insulation requirements when meeting building regulations.

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Reflectatherm Plus

Class leading reflective vapour barrier with an R-Value of 0.78 m2K/W. Suitable for use in walls, ceilings and floors.

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Procheck 500

A strong reinforced polyethylene vapour control layer with good vapour resistance. Prevents interstitial condensation.

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Profoil 861

A heavyweight, reinforced vapour control layer with aluminium foil core. High performance & corrosion resistant.

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Spacetherm

Aerogel insulation blanket with a thermal conductivity of 0.015 W/mK. Available bonded to wall linings, or cut to any size or shape.

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Procheck 300

A lightweight, reinforced, vapour control layer for use within roof and wall constructions to prevent interstitial condensation.

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Facadeshield

Façadeshield UV is designed specifically to ensure the building fabric maintains good water resistance and breathability behind open jointed cladding.