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TFLS (Timber Frame Levelling System from Simpson Strong-Tie: Universal solution for levelling and fixing sole plates to sub-structures.

The TFLS provides the combined function of levelling and fixing the sole plate to the foundation or substructure.

The TFLS (Timber Frame Levelling System) from Simpson Strong-Tie comprises a universal base plate and packing pieces which can be added or removed as required. The system transfers vertical and lateral loads from the timber frame to the foundation.

Benefits:

  • Suitable for use with traditional timber frame walls and closed panel systems
  • Adaptable - accommodates structural packing up to a depth of 30mm
  • Universal - suitable for walls of 89mm and 140mm construction
  • Flexible - packing pieces can easily be added or removed from the base plate to achieve the required depth
  • Structural - satisfies NHBC requirements for permanent structural packing of the sole plate when installed at load points (option 1 appendix 6.2-B of 2008 NHBC technical manual).
  • Multiple nail holes in bracket offer a variety of nailing options


The MJC (multiple joist connector) can be used to connect two open-web joists together to act as one singel unit.

Request a copy of the TFLS Info Sheet.

Standard Installed Graphic


TFLS Standard Installation Step 1

Starting at the highest point of the foundation slab, position and install the TFLS bracket, including one packer underneath the sole plate.

TFLS Standard Installation Step 2

Position and install a second TFLS bracket at one end of the sole plate and level to the first by adding packers to the second TFLS bracket. If necessary, install a third TFLS at the other end end of the sole plate and level to the first.

TFLS Standard Installation Step 3

Infill between TFLS brackets with additional brackets. Level by adding packers as necessary to each bracket. Ideally position infill brackets under load points (stud positions) at centres specified by the engineer/building designer.

TFLS Standard Installation Step 4

Repeat the process around the rest of the building. Once the ground floor walls are in situ, install packers under the load points not supported by a TFLS bracket.

Alternate Installed Graphic


TFLS Alternate Installation Step 1

Starting at the highest point of the foundation slab, position and install the TFLS bracket, including one packer.

TFLS Alternate Installation Step 2

Position and install a second TFLS bracket at the opposite end of the foundation slab and level to the first by adding packers as necessary to the second TFLS bracket.

TFLS Alternate Installation Step 3

Infill between TFLS brackets with additional brackets. Level by adding packers as necessary to each bracket. Ideally position infill brackets under load points (stud positions) at centres specified by the engineer/building designer.

TFLS Alternate Installation Step 4

Using the levelled TFLS as a guide, mortar between the brackets to produce a level base for the sole plate to sit on - ensuring the mortar bed is the full width of the sole plate.

Please Note:
The TFLS is laid on top of the DPC.
Fixing of the TFLS bracket to the foundation and the sole plate shall be in accordance with the engineer's instructions.
If the TFLS bracket and/or packers are installed at every load point then it is not necessary to fill the void between the underside of the sole plate and the foundation with structural grout (filling of void may be required to satisfy other regulations or requirements, i.e. Part L and Part E regulations).

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