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The SPAX rafter purlin anchors & feet
What are the challenges for fastening?
Basically, the rafter purlin anchors serve to secure the position and to absorb wind suction forces of the individual rafters. Here, the shear strength of the SPAX grooved nails and the SPAX wood connector screws is crucial. Due to the large number of rafter purlin anchors to be mounted on a roof, ease of installation should also play a role.
A good rafter foot with a large base plate offers above all the possibility to anchor it securely to the substrate (concrete or wood). The sheet thickness should also be appropriate in order to be able to absorb the enormous loads.
What solutions does SPAX offer?
Three types of rafter purlin anchors and two types of rafter feet belong to the range of SPAX wooden connectors. With the rafter purlin anchor SXPUS we have an innovative variant in our program, which brings several assembly facilitations, such as the assembly mandrel . The biggest advantage, however, is that you can attach the rafters on both sides with just one connector, so there are no left and right anchors anymore. But traditionalists will also find a variant to their taste with the rafter purlin anchor R+L Set SXPRL, which shows its strengths especially with large wooden dimensions.
With the rafter foot connectors, you are well equipped with the SXTCC concrete and the SXTCT wood for all applications. Both are solid (2.5 mm sheet thickness) and offer either two 17 holes for mounting in concrete or a hole pattern with 5mm holes for fixing in wood with SPAX grooved nails or SPAX wood connector screws. Both are the best prerequisites for a securely anchored abutment.