In splicing, only the damaged section of the wood is carefully removed and replaced with new wood. This ensures a durable repair, where the rest of the structure remains intact, preserving its original shape and function.
C4.1 Depending on the repair to be carried out, remove all necessary obstructing parts (glass, cladding, etc.).
C4.2 Apply support where the wood construction has a supporting function.
C4.3 Remove the paint well above the affected area in such a way that bare timber can be sawn into (step C4.4). For sanding, use an (eccentric) rotary sander and sand down to the bare wood.
C4.4 Remove the degraded parts by sawing them out in the healthy wood. Stiles can preferably be sawed off at an angle of approx. 30º, which makes the adhesive seam easier to apply without air inclusion (step C4.10). If a stile has a supporting function, contact RCI for implementation advice.
C4.5 On the cutting surface, check that the degraded wood has been completely removed. The wood must be even in colour and must not be soft or crumbling. If necessary, remove the compromised timber in accordance with C4.3 and C4.4.
C4.6 Cut the splices. Then check the measurements, taking into account the necessary resin gaps:
DRY FLEX® 1: minimum 5 mm – maximum 15 mm
DRY FLEX® 4 -16: minimum 5 mm
BIO FLEX™ ALLROUND – COOL: minimum 5 mm
C4.7 Measure the wood moisture content of the joint with the EASY-Q™ wood conditioner CS1. If the moisture content of the wood is too high (≤ 18%), allow it to dry naturally in the open air.
C4.8 Remove loose exposed wood fibres from the routed surface by sanding. Carefully remove any wood debris and dirt.
C4.9 Apply DRY FIX® UNI to the contact surface thinly but fully. Allow to penetrate for at least 20 minutes. Check within 45 minutes that the DRY FIX® UNI has penetrated properly (the treated surface will then have a nearly matte finish). Remove (dab off) any surplus DRY FIX® UNI with absorbent paper towel or a lint-free cloth. The repair paste should preferably be applied immediately after treatment with DRY FIX® UNI. If the repair paste is applied later, this should be done within 24 hours after applying DRY FIX® UNI and the repair surface should be checked for contaminants.
C4.10 Offer up the splices holding them temporarily in place with chocks. Apply DRY FLEX® or BIO FLEX™ with the smallest EASY-Q™ stainless steel modelling knife, in order to obtain optimal contact of the wood of both the existing timber construction and splices. Then apply the required amount of DRY FLEX® or BIO FLEX™ in a “triangular shape” to the splices. Apply even pressure during application; the applied “triangular shape” DRY FLEX® or BIO FLEX™ extrudes outwards and fills the entire adhesive gap. Avoid air inclusion.
C4.11 After sealing according to the RCI method, use the correct RCI modelling method.
C4.12 After curing, remove any chocks that may have been used. Then remove the top layer (amine layer) by sanding the DRY FLEX® or BIO FLEX™. If necessary, sand the entire surface mechanically smooth and even. Interfering irregularities and transitions between wood and the DRY FLEX® or BIO FLEX™ used must not be visible afterwards. Carefully remove the sanding dust.
C4.13 Smooth out any small irregularities (surface filling) according to method P9.
C4.14 Replace the parts removed at C4.1 (glass, plating, etc).
C4.15 Treat according to painting advice. Always use a primer as a base. When time is important factor a quick drying primer can be used.
The number behind the type DRY FLEX® refers to the curing time. It should be noted that the curing time of the products depends on the applied layer thickness and the temperature of the surrounding environment.
