Oak RSJ Cover Beam
We use two methods to create the beam covers, the first is using kiln dried boards jointed together these are a great and easy way to cover up any RSJ’S albeit steel or concrete, you don’t even need to have an RSJ to cover, you can simply use these to clad a brick wall to add instant character to your room, giving the impression that it is in fact an oak beam.
We use character grade kiln grade boards which are jointed together, to form the covers and can use various methods to distress the boards to help the ageing effect, we can if requested hand scrape the boards. These boards finish at 20mm thick.
The second method is to hollow out air dried beams, which essentially is a close to the real thing as you will get, we use a combination of chainsaws and hand tools to remove the material from the beam, it works like this, you have to leave roughly 40mm of material all the way around the beam for structural integrity, as with all air dried products the cracks that form as the beams slowly dry out can be quite deep, so if you have an RSJ that is 200mm wide x 150mm deep, you will need an oak beam with external measurements that are 280mm wide x 190mm deep, that is 40mm for each side cheek and 40mm for the underside.
Price guide for RSJ covers made from kiln dried boards, start at £28 per running ft, this is for a cover that has internal dimensions of 150mm x 150mm , so a cover that is say 3mtrs long will cost £277 plus delivery.
Price guide for Hollowed out beams start from £40 per running ft, this is for a beam that has EXTERNAL dimensions of 150mm x 150mm, with internal dimensions of 70mm wide x 110mm high, a beam like this will cost £396 plus delivery.
Upon request we can also distress the main face of your covers by wire brushing the surface of the oak, this helps give depth to the grain and add an aged look, which is ideal for period or listed properties.
Fixing method. The only real way to fit either style of cover, is to screw through the side face into what ever material you have underneath, albeit it a timber noggin, or brickwork, you then fill the screw hole with an oak plug, of which we supply as standard with all types of cover.
Hollowed out beam or kiln dried boards! which is best?. There are pro’s and cons for either style, the kiln dried board version will not move or need to acclimatize to your home as the oak boards are kiln dried to a moisture content of 8-12% so they are as dry as they will ever need to be. The down side is they will not have as much natural character as the air dried beams, there may also be some form of visible joint line underneath where the 3 boards are jointed together, as we use character grade boards to make the covers, they have very inconsistent grain patterns, this can make the joint lines sometimes impossible to hide, using joinery grade boards would solve this, but this then defeats the object of trying to create a characterfull piece of joinery. Hollowed out beams are taken from 3-5 year, ( sometimes older ) air dried beams , these are as close to the real thing as you can get, and have all the character you will need, the downside to this is that although they are mostly dried out, there may be some movement during the beams acclimatisation into your home.
We can also supply a choice of either oak or wrought iron joint brackets if needed to cover up the joint line between where two box sections meet together, this is an option you could consider when covers will be over 3 mtrs long, as transport costs are extremely high once you get to 3mtrs and over, so for example a 4 mtr long beam cover could be supplied in two sections of 2mtrs long. We can supply covers finished in either a wax polish, Danish oil, or left for you to finish to your own taste once installed. For any enquiry regarding our beam covers please contact us on 01733 840968.