Ask An Expert

Home » Expert Advice » Ask An Expert

I've embarked on DIY refinishing pine 14cm tongue & groove floors. After having a few broken boards replaced I notice a board splitting from each end.
Can it be repaired, and how, or should it be replaced?

Woodsolutions Answer +

The NSW Heritage Office has a comprehensive data sheet on repairing timber floors, and replacing boards where necessary. You can find it here: https://www.environment.nsw.gov.au/resources/heritagebranch/heritage/maintenance54tonguegroove.pdf.



I have 108 X 19 KDHW T&G flooring we installed to a ground floor addition in Melbourne 18 months ago. The problem is movement. Boards have crowned and edge bonded and separated. In some cases the boards have almost returned to normal and then moved elsewhere. The whole subfloor area has been insulated with foil insulation. Flooring has been glued and secret nailed direct to joist then top nailed. Heating is under floor gas ducted heating with split systems for cooling. Can you advise what we might expect with this problem and /or any remedial work or action we can take.

Woodsolutions Answer +

If the boards have ‘crowned’ (centres of boards higher than the edges) that suggests the underside has dried out, ie. the opposite of cupping, where boards absorb moisture from the underside, making them swell so the edges curl up. Separation of boards also indicates shrinkage caused by drying. We wondered how much warming effect the ducted heating has in the subfloor space. With ducted systems there is some heat loss through duct walls and fittings, although less with new ducting, but perhaps there is enough heat loss to cause drying of the underside of the flooring. If parts of the floor have ‘almost returned to normal’ presumably this happened during the recent summer months when the heating was not in use and the flooring adjusted. Edge bonding is a separate problem, caused by the floor finish acting as an adhesive, gluing the edges of the boards together. Whatever the cause, clearly the boards are shrinking and it seems likely that it is related to the underfloor heating, particularly if the heating is run continuously, or for long periods during winter.


I am building a timber TV stand (tv weight of 55kgs) with a support of tv mount, i am using two 90x 90mm square treated pine 2.10 meter in height as the pillars and sufficient supporting beams across, is there any calculator to measure weight ratio

Woodsolutions Answer +

The design of your TV stand is a little outside the scope of our advisory service. We weren’t sure why there are only two posts – it would seem to need four, one at each corner. Also the posts are quite high so you will need to be careful that the stand is sufficiently braced against racking, to stop it swaying sideways. We don’t know of a simple calculator that takes these factors into account. It would be quite a quick job for a small consulting engineering practice to run their eye over it, so we suggest you find someone in your area who is suitably qualified.

Sign up or Login to continue reading the answer.

Displaying 0/0

Show me 10 /20 /30

Haven't found what you're looking for?

If you have not found the answer for your question for in the Search results, please call the Expert Advice line or send us an email for a prompt response.



Call the WoodSolutions Expert Advice line on 1300 414 044*
Available Mon - Fri: 9am - 5pm

*Please note, there is a charge, determined by your telecommunications provider, for these calls.
This service is not available to international callers.

Are you looking for a supplier?

Social Media Feeds