Lintel Moisture Control

Moisture Transfer

The control of moisture is most applicable to Lintels used in cavity situations, where the inner of the cavity wall should remain dry.

All our cavity wall lintels with sloping webs slope down towards the outer, unlike some other manufacturers that either do not slope their lintels for the same application, or that slope both ways from the center of the cavity

This means that in the event of a DPC failure above the lintel, any moisture will automatically be channelled away to the outer leaf of the wall.

Lintels and DPC requirements

From a corrosion perspective, all lintels except those made of stainless steel should be installed with a separate DPC above them to afford protection from moisture that would cause corrosion.

Lintels manufactured from stainless steel may act as a DPC in their own
right so long as they have 150mm fall in the cavity from the inner down
to the outer, and they have stop-ends installed.

The stop-ends may be proprietary adhered stop-ends as detailed on our
high strength stainless site, or integrated welded stop-ends (our Lintray
system, shown below and available for any stainless lintel we make).

Stainless steel lintels are generally chosen from our high strength
stainless site, for their superior strength, economy and corrosion
resistance vs. using the old grade 304 advertised on this site.
Click here to visit our dedicated high strength stainless lintel site

If you’re after Stainless Steel cavity lintels,
Specify LINTRAY® for the ultimate DPC solution:

Any of our cavity lintels can be used as a DPC in themselves, so long as
they are made from Stainless steel. This is achieved by welded specially
designed stop ends onto the lintel, thus eliminating the need for a separate
DPC. This saves time and money on site, and completely eliminates the
possibility of your DPC being torn during installation!

The Lintray works as follows:

The ‘stop-end’ is positioned at least 100mm from the cavity closer, so any water that bypasses the first two barriers must track back this far before it can cross to the inner leaf.

The ‘stop-end’ slopes downwards to the outer leaf at its base, so any moisture running down the outside of the plate tracks to the outer.

The ‘stop-end’ is positioned at least 100mm from the cavity closer, so any water that bypasses the first two barriers must track back this far before it can cross to the inner leaf.