Heat Mat TTB-006-7PCK, TTB-010-4PCK, TTB-010-6PCK, TTB-111-0090, TTB-010-7PCK Installation Instructions

Thermal Insulation Board Fixing Instructions

These instructions are for all TTB products including 4, 6, 10 and 20mm thermal underfloor heating insulation boards.

Our UK manufactured thermal insulation boards are ideal
for insulating your floor and reducing the heat-up time and
increasing the efficiency of your heating system. The product
is suitable for use beneath any of our underfloor heating
systems and the boards can pay for themselves, through
reduced heating bills, in as little as 3 years when used on
concrete floors in badly insulated properties.

PLEASE NOTE THAT THE SIMPLEST WAY TO TRIM BOARDS
IS TO CUT THE CEMENTITIOUS LAYER WITH A SHARP BLADE
ON ONE SIDE OF THE BOARD. THE BOARDS CAN THEN BE
SNAPPED IN HALF.

Fixing to Concrete and Floors

Prior to laying the boards the floor base should be cleared of
any traces of loose material and be level and dust free.
If the floor is of new concrete or screed it is important that it is
correctly cured and fully dried before treating with a suitable
primer that is compatible with your chosen tile adhesive.
The thermal insulation boards should be fixed in a brick-like
pattern using a flexible rapid set cementitious tile adhesive; it
is important that solvent based or ready mixed adhesives are
NOT used.

Apply a bed of tile adhesive to the base using an 8mm square
notched trowel. If an 8mm notched trowel is not available
you can use a 6mm square notched trowel held at an upright
angle to increase the height of the adhesive bed. Each board
should be fully bedded down to eliminate voids beneath and
care should be taken to ensure there are no gaps between
the boards. When laying the tile adhesive ensure you DO NOT
allow a dry skin to form as this will prevent the adhesive
bonding securely to the face of the insulation board.

Fixing to Wooden Floors

Fixing with adhesive. If fixing the boards to a wooden base

with tile adhesive, the floor base must be structurally
secure for its intended use. If your floor base is suitably secure
then please follow the installation instructions for fixing to
concrete floors. If the floor is not structurally secure then it
can be secured with 18mm ply or similar before following the
installation method using tile adhesive. Alternatively the floor
can be secured by mechanically fixing 6mm or 10mm boards
which can save build height and installation time. 10mm
boards are preferred for this purpose as they offer greater
strength and board shoule be laid in a brick-like pattern.

Fixing with mechanical fixings (6 & 10mm boards only).

Our 6 and 10mm insulation boards can be used to secure
floor boards by fixing them with approximately 21 screws per
1200mm x 600mm board at 300mm centres; a 35mm fixing
washer should be used under each screw head and the screw
tightened until the washer bites into the board to provide a
firm hold. The correct length screw should be used to allow it
to pass through the board and into the wooden base beneath.
The boards should be laid in a brick-like fashion. The base
should be checked to ensure there are NO electrical cables or
pipework beneath that may be damaged by the screws when
affixing the boards.

Any slight depressions or gaps in the concrete floor can
normally be taken up within the thickness of the tile adhesive.
Thermal insulation boards must not bridge movement joints
within the sub floor. Any movement joints must be maintained
throughout the construction including the boards and final floor
covering. Maintain and seal all movement joints appropriately.

Before installing your underfloor heating system

Before starting to install your underfloor heating system you

must tape all joins between the boards with reinforcement
tape. After the tape has been laid you should prime the boards

with a primer suitable for use with the tile adhesive or levelling
compound you have chosen. Tape is available in a 90m roll to
cover 36m2 of boards.

Installing underfloor heating mats/cables onto
Heat Mat Thermal Insulation Boards

Once the insulation boards have been laid and all adhesives
have been allowed to dry fully, the heating mats/cables can
be installed taking care not to damage the heating element.

If tiles are to be laid on top, the underfloor heating system
should be fully encapsulated within a flexible tile adhesive.

Alternatively, the system can be encapsulated within Heat
Mat flexible self-levelling compound or a similar flexible latex
compound and allowed to dry fully, before bedding in the tiles
with a flexible adhesive.

If the final floor covering is carpet, bonded wood or vinyl, the
heating system must not have an output higher than 160Watts
per/m2 and the heating cables must have a minimum
covering of 12mm of levelling compound, which must have
been allowed to dry fully prior to laying the final finish.

All floor coverings should be checked with the manufacturer to
ensure they are suitable for use with underfloor heating, and
the full fitting instructions supplied with the heating system
should be read prior to installation.

Stocked Product options for Heat Mat Underfloor Heating Thermal Insulation Boards

Product Code Description Pack Size Dimensions (L/W) Coverage U Value (w/m2)

TTB-004-4PCK 4mm Concrete Coated Thermal Insulation Boards 4 Boards 1200mm x 600mm 2.88sqm 3.75

TTB-004-5PCK 4mm Concrete Coated Thermal Insulation Boards 5 Boards 1200mm x 600mm 3.60sqm 3.75

TTB-006-5PCK 6mm Concrete Coated Thermal Insulation Boards 5 Boards 1200mm x 600mm 3.60sqm 3.05

TTB-006-6PCK 6mm Concrete Coated Thermal Insulation Boards 6 Boards 1200mm x 600mm 4.32sqm 3.05

TTB-006-7PCK 6mm Concrete Coated Thermal Insulation Boards 7 Boards 1200mm x 600mm 5.04sqm 3.05

TTB-006-8PCK 6mm Concrete Coated Thermal Insulation Boards 8 Boards 1200mm x 600mm 5.76sqm 3.05

TTB-010-4PCK 10mm Concrete Coated Thermal Insulation Boards 4 Boards 1200mm x 600mm 2.88sqm 2.23

TTB-010-5PCK 10mm Concrete Coated Thermal Insulation Boards 5 Boards 1200mm x 600mm 3.60sqm 2.23

TTB-010-6PCK 10mm Concrete Coated Thermal Insulation Boards 6 Boards 1200mm x 600mm 4.32sqm 2.23

TTB-010-7PCK 10mm Concrete Coated Thermal Insulation Boards

TTB-020-0004 20mm Concrete Coated Thermal Insulation Boards 5 Boards 1200mm x 600mm 3.60sqm 1.33

TT B -111-00 9 0 Thermal Insulation board reinforcement tape - 90m roll suitable for 36m2 of boards

TT B -111-00 9 0 Screws and washers for fixing 6mm and 10mm insulation board onto floorboards (21 required per board)

Other sizes are available on special order, please contact us for details on 01444 247020 or email: [e-mail]

7 Boards

1200mm x 600mm 5.04sqm 2.23

Made in the UK

For further information please check the fitting instructions supplied with your heating system or

Contact Heat Mat’s Technical Support Team on: 01444 247020 for installation advice.

www.heatmat.co.uk

Version 4: 08.19