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Floor Insulation

It can be easy to forget how important insulating your floor is. That is, until winter sets in and you feel the cold rising from the ground. As underfloor heating becomes more and more popular, it is even more important to insulate the floor. Otherwise all the heat your underfloor heating system produces is just escaping through into the ground below your home! SuperFOIL is an ideal choice for floors, because in addition to having very high thermal resistance, it’s radiant properties also help reflect the heat back into your home where you need it.

Suspended Ground Floor Insulation

SuperFOIL offers an easy to install, high performance solution for suspended ground floors, and because it is designed to be installed as a continuous layer over the face of the floor joists, SuperFOIL creates an airtight barrier against draughts, eliminating cold bridges and the draughty open air of the crawl space below. These two factors are an important contribution to reducing your fuel bills and carbon emissions.

Ask us how SuperFOIL can help save you money!

Suspended Ground Floor

Suspended Ground Floor Solutions

Insulation SpecificationU-Value Achieved
SuperFOIL SF19+0.17U*
SuperFOIL SF19+ + 30mm HD Foam Board0.14U*
SuperFOIL SF400.14U*
SuperFOIL SF40 + 30mm HD Foam Board0.12U*
SuperFOIL SF600.12U
SuperFOIL SF60 + 30mm HD Foam Board0.11U*

*based on a 0.5 P/A ratio

How to Install

Apply SuperFOIL directly over the joists.

If you are battening out before your finished floor :

Apply tension to the SuperFOIL as you staple in place; staple into the joists with staples inserted at regular intervals, 50mm to 100mm spacing is recommended. Cut to length and fix the next layer.

If you are fitting your floor finish directly onto the joists/SuperFOIL :

Staple SuperFOIL in place to create the required airgap; staple into the joists with staples inserted at regular intervals, 50mm to 100mm spacing is recommended. Cut to length and fix the next layer.

Overlap all joints by a minimum of 50mm and staple onto the joist where the joint crosses the rafter. Seal all joints using SuperFOIL tape.

At the perimeter trim SuperFOIL around the joists and seal to either the wall plate or the Cavity wall insulation if present.

Apply tape to any tears, cuts or joints.

Solid Floor Insulation

Traditional solid floors require a significant thickness of insulation to achieve a good thermal performance. SuperFOIL SFUF can help to reduce this thickness, allowing more flexibility in design without sacrificing performance. If you are faced with a challenging floor height restriction, SFUF could be the answer. The reflective properties of SuperFOIL will offer additional benefits if you are installing underfloor heating by reflecting radiant heat back into the room where you want it!

Request a U-value calculation for your floor and see what you can achieve with SuperFOIL SFUF.

Solid Floor Solutions

Insulation SpecificationU-Value Achieved
SuperFOIL SFUF + 35mm HD Foam Board0.24U**
2 x SuperFOIL SFUF + 35mm HD Foam Board0.20U**
2 x SuperFOIL SFUF + 100mm HD Foam Board0.13U**

**based on a 0.5 P/A ratio and 65mm concrete screed

Solid Floor

How to Install

If Screeding

Lay SFUF on a clean, dry and smooth surface.

Start at the wall edge with a minimum of 100mm lapping up the wall.

Butt joint edges together and cover joints with SF Jointing Tape.

Then proceed to install your underfloor heating and screeding to the manufacturers recommendations.

 

If Installing a Fixed Floor

Apply Batten to the existing floor

Apply SuperFOIL directly over the battens.

If you are battening out before your finished floor :

Apply tension to the SuperFOIL as you staple in place; staple into the joists with staples inserted at regular intervals, 50mm to 100mm spacing is recommended. Cut to length and fix the next layer.

If you are fitting your floor finish directly onto the joists/SuperFOIL :

Staple SuperFOIL in place to create the required airgap; staple into the joists with staples inserted at regular intervals, 50mm to 100mm spacing is recommended. Cut to length and fix the next layer.

Overlap all joints by a minimum of 50mm and staple onto the joist where the joint crosses the rafter. Seal all joints using SuperFOIL tape.

At the perimeter trim SuperFOIL around the joists and seal to either the wall plate or the Cavity wall insulation if present.

Apply tape to any tears, cuts or joints.

Suspended Internal Floor Insulation

Suspended internal floors can be a source of considerable heat loss if there is an unheated space below such as a garage or basement. Gaps between floorboards can create draughts allowing heat to escape and cold air to rush into your home. Installing a high-performance insulation such as SuperFOIL improves the thermal efficiency of the floor and at the same time creates an air-tight barrier, effectively eliminating draughts.

Suspended Internal Floor

Suspended Internal Floor Solutions

Insulation SpecificationU-Value Achieved
SuperFOIL SF19+0.17U*
SuperFOIL SF19+ + 30mm HD Foam Board0.14U*
SuperFOIL SF400.14U*
SuperFOIL SF40 + 30mm HD Foam Board0.12U*
SuperFOIL SF600.12U
SuperFOIL SF60 + 30mm HD Foam Board0.11U*

*based on a 0.5 P/A ratio

How to Install

Apply SuperFOIL directly over the joists.

If you are battening out before your finished floor :

Apply tension to the SuperFOIL as you staple in place; staple into the joists with staples inserted at regular intervals, 50mm to 100mm spacing is recommended. Cut to length and fix the next layer.

If you are fitting your floor finish directly onto the joists/SuperFOIL :

Staple SuperFOIL in place to create the required airgap; staple into the joists with staples inserted at regular intervals, 50mm to 100mm spacing is recommended. Cut to length and fix the next layer.

Overlap all joints by a minimum of 50mm and staple onto the joist where the joint crosses the rafter. Seal all joints using SuperFOIL tape.

At the perimeter trim SuperFOIL around the joists and seal to either the wall plate or the Cavity wall insulation if present.

Apply tape to any tears, cuts or joints.

SuperFOIL is now BBA Certified 

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