Building Solutions --> Timber Crack Injection
Methods of repairing splits and fissures Section 1 2 3 4 Next 1. Historical method of repairing fissures in solid wood components
The sketches below show typical methodology used during the 1960s and 70s for injection fissures. If carried out carefully, this method was satisfactory, but is now not recommended.
This method suffers because the fissure are not regularized which means cleaning is difficult. More important there have been many instances using this method where the adhesive has not completely filled the rear of the triangular fissure which then aids the ingress of water by capillary attraction, eventually causing decay within the component.
Cracks, shakes and fissures 10mm wide and less which require injection. The injection method uses an epoxy adhesive and may be supplemented with dowels if the defect extends more than 30% through the timber. Clean out cracks with a saw blade and vacuum clean. Fix flanges using quick setting P7 Paste and then remove blanking nail to reveal the open hole. Connect flange via plastic tube to epoxy adhesive cartridge Remove flanges, sand, paint or stain. Cosmetically finish, if appropriate, with TM3 Moulding Mortar. Section 1 2 3 4 Next
Cracks, shakes and fissures 10mm wide and less which require injection. The injection method uses an epoxy adhesive and may be supplemented with dowels if the defect extends more than 30% through the timber.
Clean out cracks with a saw blade and vacuum clean.
Fix flanges using quick setting P7 Paste and then remove blanking nail to reveal the open hole.
Connect flange via plastic tube to epoxy adhesive cartridge
Remove flanges, sand, paint or stain. Cosmetically finish, if appropriate, with TM3 Moulding Mortar.
Section 1 2 3 4 Next
© 2011 Rotafix Ltd Rotafix, Aquachem, Rendacrete, Resiwood, Timberset, Vinachem and Zeroset are all registered trade marks of Rotafix Ltd.
