- how to repair timber trusses and wooden floors
is presented by Property Repair Systems. We show you how to make Structural
repairs to beams and other wooden components inside buildings without
destroying sound timber.
be injected into slots in arch. After resin injection in a tie beam
the slot covers have been sanded and the original strap refitted.
Reading on this subject
Repair Review - Issue 1
Repair Review - Issue 2
structural timbers - how to repair timber trusses, repair lintels, repair
beams, fix joists, repair wall plates & repair rafters. Repairing
shakes and splits in timber.
repairs combined with beam repairs can save historic floors and reduce
costs. If you need any help with any type of Structural timber repair,
timber splits, shakes or cracks Property Repair Systems whose staff
will be pleased to give you completely free, no obligation advice on
01626 872886 . The information you need may be in the project below.
If not, call them for expert, impartial advice.
structural timbers has always been an expensive and time consuming operation.
From a timber lintel in a Georgian terrace, to a huge tie beam in a
barn conversion, if a new piece could not be spliced, or bolted on,
the lot had to come out. Very often, even if it were possible to bolt
a new section of timber on, the overlap for the bolts was so long it
was almost like replacing the entire timber anyway. Property Repair
Systems, which employs experts in all types of timber repairs and treatments,
are happy to provide a free telephone help line for your queries regarding
timber treatment and repair.
We are very
pleased to introduce the wonderful new technology, the Timber-Resin
Splice System. Removing complete timbers or carrying out traditional
splices in joists, rafters and other structural timbers requires considerable
opening up of ceilings, floors and roofs, and most people would rather
not take their houses apart. In most cases complete replacement of a
timber will be impossible by traditional means without scaffolding or
roof removal, but a TRS will allow the Low Disturbance (and therefore
cheaper) repair of beams, roof purlins, tie beams, lintels, joists and
rafters. This method can even be used for repairing flag poles!
Timber-Resin Splice System a section of timber can be cut out, in situ,
and a new section added. The repair will be stronger than the original.
How is this done? Obviously for the benefit of this project we have
simplified the procedure. But not by much! It really is an uncomplicated
breakthrough allowing new, treated timbers to be installed with the
minimum of fuss and disturbance. Timbers are not all accessible from
the same place. While you may be able to get to a floor joist from the
top by lifting a section of the floor, it is far easier to access a
rafter from underneath. Property Repair Systems has devised different
ways of repairing structural timber, to allow access from all angles.
CRACKS, SPLITS AND SHAKES IN TIMBER.
timber beams need not affect the overall integrity of the structure.
Indeed, cracks in timber beams can be taken as a positive visual feature
of the timber, which, in conjunction with the timber grain, distinguish
timber from the more uniform man-made materials such as steel and concrete.
The integrity of the timber can be called into question when it is impaired
by cracks, splits and shakes and often it has required the replacement
of a beam or rafter which has formed part of the original structure.
This can now be overcome in a great many cases with the use of an injected
epoxy resin. We recommend seeking the advice of a structural engineer
for structural repairs.
warps and fissures are formed as a result of the timber giving up moisture
and shrinking. This may occur as part of initial drying or subsequent
changes, during service, in the Equilibrium Moisture Content. The EMC
of timbers inside buildings can range from 9% to 14%. Fibre saturation
is reached in constructional softwoods at about 28 to 32%.
and splits that are greater than 5mm wide the void can be filled with
an Mouldable Epoxy Putty, but if the crack penetrates more than 30%
through the timber it will be necessary to provide dowels (Epoxy-Glass
Bars) across the filled section in order to 'stitch' the two halves
together. The advice of a Structural Engineer should be taken with regards
to the number, diameter, length and spacing of the dowels. The dowels
can be made of glass fibre, carbon fibre, steel or stainless steel.
We recommend the use of epoxy/glass or epoxy coated steel, set in a
Thixotropic Epoxy Injection Resin. Clean out cracks or splits with a
saw blade and vacuum out all sawdust. Fill the cracks with Mouldable
Epoxy Putty. When the Putty has set drill small holes, about 6mm in
diameter through the epoxy into the back of the crack. Blow, or vacuum
out the dust. Directly inject Thixotropic Epoxy Injection resin from
the cartridge into the hole, until the resin flows from the adjacent
hole. Continue until all the holes have been injected and cap off each
with Mouldable Epoxy Putty.
any excess Putty and colour finish to suit the timber. If 'stitching'
is required the cracked areas can now be cross drilled and epoxy-glass
or steel rods fitted in Thixotropic Epoxy Injection resin.
Typical along the grain split
in a carrier beam, caused by drying out. Close up of a timber crack
in a rafter. Both can be resin repaired.
Repair Systems expert staff can help you with all kinds of timber repairs
and are more than happy to give further information and advice.
Call 01626 872886 or E:
Mail us email@example.com
T: 01626 872886
E: Mail us firstname.lastname@example.org
Site written by: David
David Moore, B.A. (Hons.),
C.T.I.S., C.R.D.S. Technical Author
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