Home > Companies > FOAMGLAS® > 4.3.1 Roof: Flat or Tapered Insulation (Hot Adhesive) with Membranes and Paving or Blocks

Properties:

  • Waterproof.
  • High compressive strength without deflection or movement.
  • Non-combustible.
  • Impervious to water and water vapour.
  • Sealed cellular structure.
  • Dimensionally stable.
  • Acid resistant.
  • Easily cut to shape.
  • Resistant to vermin.
  • Recycled content scrap glass: Minimum 60%.
  • Ozone Depletion Potential (ODP): <1%.
  • Global Warming Potential (GWP): Zero.
  • GreenSpec rating, see 'Cellular Glass' or 'Foamed Glass'.
  • Green Guide rating, see 'Cellular Glass'.

Advantages:

  • Quality: Systems with high quality materials; management by systematic site inspections and professional consulting.
  • Cost efficiency: The high durability preserves maximum value and ensures minimal maintenance costs.
  • Sustainability: Optimum insulation performance and protection against moisture for future generations. Scrap can be reclaimed and re-cycled to make new Foamglas.
  • Insulation performance: Insulation performance is permanent; ageing does not take place. Use above and below ground, unaffected by moisture, humidity and compressive loads. Proven to retain its thermal and vapour control characteristics for ˃ 50 years.
  • No thermal bridging: Fully bonded insulation systems, zero fixings prevent thermal bridging, eliminating the risk of fixings corrosion.
  • Non-toxic: Foamglas cellular glass contains no toxic substances, does not contaminate water or the ground, in cases of fire, does not develop fumes or toxic gases.
  • Sealed structure and non-hydroscopic: Each cell has a glass wall, giving the unique structural strength, vapour tight and non-hydroscopic properties.
  • A separate vapour barrier is not required: With its purpose manufactured adhesives, Foamglas is suitable for extreme humidity environments and gives control of the vapour drive in any direction. Foamglas is an insulation and vapour barrier in one single material.
  • High compressive strength: Capability to withstand high compressive loads without deflection or movement.
  • Dimensional stability: Very low rates of thermal movement, mechanical fixings are not required to prevent delamination from the parent structure.
  • Reduced weight on the structure, screed to fall not required.

Bespoke tapered insulation design service available.

Standard product features

Characteristics:

  • Thermal performance is permanent and never changes.
  • Manufactured from recycled glass (minimum 60%) and natural raw materials which are available in abundant supply - sand.
  • The insulation is totally inorganic, contains no ozone depleting propellants (CFCs, HCFCs etc), flame resistant additives or binders; VOC or other volatile substances.
  • For substrate quality and suitability, see Technical Guide TG1.

- Foamglas® Slab (F):

  • Density (EN 1602, ± 10%): 165 kg/m³.
  • Length (EN 822, ± 5 mm): 600 mm.
  • Width (EN 822, ± 2 mm): 450 mm.
  • Thermal conductivity (EN ISO 10456): ≤ 0.050 W/m·K.
  • Reaction to fire (EN 13501-1): Euroclass A1.
  • Compressive strength (EN 826 annexe A): ≥ 1600 kPa.
  • Flexural modulus of elasticity (EN12089): 1500 MN/m².
  • Bending strength (EN 12089): ≥ 550 kPa.
  • Tensile strength (EN 1607): ≥ 150 kPa.
  • Thermal expansion coefficient (EN13471): 9 x 10-6 K.
  • Impervious to water vapour (EN ISO 10456): µ=∞ infinity.
  • Green Guide rating B.
  • Flat: CEN Keymark: 001-BK-516-001-0016-T057.
  • Tapered: CEN Keymark: 001-BK-516-001-0019-T057.
  • CPR DOP: 100010050 and 140440050.

- Foamglas® Slab (S3):

  • Density (EN 1602, ± 10%): 130 kg/m³.
  • Length (EN 822, ± 5 mm): 600 mm.
  • Width (EN 822, ± 2 mm): 450 mm.
  • Thermal conductivity (EN ISO 10456): ≤ 0.045 W/m·K.
  • Reaction to fire (EN 13501-1): Euroclass A1.
  • Compressive strength (EN 826 annexe A): ≥ 900 kPa.
  • Flexural modulus of elasticity (EN12089): 1200 MN/m².
  • Bending strength (EN 12089): ≥ 500 kPa.
  • Tensile strength (EN 1607): ≥ 100 kPa.
  • Thermal expansion coefficient (EN13471): 9 x 10-6 K.
  • Impervious to water vapour (EN ISO 10456): µ=∞ infinity.
  • Green Guide rating A.
  • Flat: CEN Keymark: 001-BK-516-001-0012-T00A.
  • Tapered: CEN Keymark: 001-BK-516-001-0015-T00A.
  • CPR DOP: 100010030 and 140440030.

- Foamglas® Slab (T4+):

  • Density (EN 1602, ± 10%): 115 kg/m³.
  • Length (EN 822, ± 5 mm): 600 mm
  • Width (EN 822, ± 2 mm): 450 mm.
  • Thermal conductivity (EN ISO 10456): ≤ 0.041 W/m·K.
  • Reaction to fire (EN 13501-1): Euroclass A1.
  • Compressive strength (EN 826 annexe A): ≥ 600 kPa.
  • Flexural modulus of elasticity (EN12089): 700 MN/m².
  • Bending strength (EN 12089): ≥ 450 kPa.
  • Tensile strength (EN 1607): ≥ 100 kPa.
  • Thermal expansion coefficient (EN13471): 9 x 10-6 K.
  • Impervious to water vapour (EN ISO 10456): µ=∞ infinity,
  • Green Guide rating A.
  • Flat: CEN Keymark: 001-BK-516-001-0026-T00A.
  • Tapered: CEN Keymark: 001-BK-516-001-0032-T00A.
  • CPR DOP: 100010015 and 140440015.

Options

Insulation:

- Thickness:

Foamglas insulation, factory produced with a tapered thickness, available in a wide range of gradients from 0.55% (1:180) to 6.7% (1:15). Contact manufacturer for further information as a bespoke tapered CAD design service is available.

Use standard flat slabs for upstands and flat gutters. For flat insulation thicknesses of ˃180 mm, use double layers of minimum 90 mm per layer.

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying

Manufacturer

Name:

FOAMGLAS®

Tel:

+44 (0)20 7492 1731

Product reference

4.3.1 Roof: Flat or Tapered Insulation (Hot Adhesive) with Membranes and Paving or Blocks

Primer

By others, suitable for hot bitumen

Adhesive

Hot bitumen, as section J41, clauses 320 or 322

Insulation

 - Type:
[Foamglas® Slab (F)]
[Foamglas® Slab (S3)]
[Foamglas® Slab (T4+)]
 
 - Thickness:
[Tapered]
-
See 'Options' below.
[40 mm]
[50 mm]
[60 mm]
[70 mm]
[80 mm]
[90 mm]
[100 mm]
[110 mm]
[120 mm]
[130 mm]
[140 mm]
[150 mm]
[160 mm]
[170 mm]
-
Not available in Foamglas® Slab (F).
[180 mm]
-
Not available in Foamglas® Slab (F).
 

Top layer

Two layers of bituminous waterproofing membranes, top layer UV-resistant, as section J41

Protective layer

Required, as section J42, clause 380

Surface protection

[Chippings/ gravel with interlocking paving stones, as section J41, clauses 460-478]
[Support pads with paving slabs, as section J41, clauses 460-478]

Manufacturer details

31-35 Kirby Street,
Hatton Garden,
London, EC1N 8TE
Tel +44 (0)20 7492 1731
Fax +44 (0)20 7492 1730
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