Browse Forums Building A New House 1 Jul 30, 2017 1:27 pm Our builder had internal platerboard put in on Friday, the house isn't in lockup stage yet and we went out and wandered through checking it out unsupervised. I decided to measure rooms to see whether they are in fact the size they are meant to be and just about every wall is 20mm shorter than the plan. Eg. a bedroom that's meant to be 3000x3000 is 2980x2980. It seems like the plasterboard is 10mm thick and so has taken off 20mm from each wall. I measured some widths of the wall and they're 90mm instead of 70mm as per the plan. It's like the 70mm accounts for the frame and then another 20mm added on top of it. Lots of little inconsistencies that has me really worried. Can anyone share some insight? Is it normal practice for rooms to be 20mm smaller because of the plasterboard? I expected if the plan says 3000x3000 that the actual space in the room is that size. Re: Rooms 20mm smaller than they should be? 4Jul 30, 2017 2:05 pm That is perfectly normal. The dimensions marked on the plan will be to face of the wall structure, not the finishing - i.e. they'll be from frame to frame and don't take into account the plasterboard. Therefore, the actual dimensions of the room will be (assuming standard 10mm plasterboard on each wall) 20mm smaller than on the plan. Edit: beaten by Koda! Re: Rooms 20mm smaller than they should be? 5Jul 30, 2017 2:08 pm The builder is just probably following measurements on the plan, do you know how to read the plan? Even if the builder has erred the discrepancy is insignificant and not likely to reduce utility of the room. As koda said usually the measurements are ex wall lining. Foremost Building Expert in Australia,assisting with building problems/disputes, building stage inspections,pre-contract review advice for peace of mind 200 blogs http://www.buildingexpert.net.au/blog Re: Rooms 20mm smaller than they should be? 7Jul 31, 2017 7:36 am I'd be very careful about approaching them with your 20mm concern, as you'll probably be laughed at as this is normal - you'll come across uneducated and they'll undermine you because of this. Generally there are notations somewhere unusually on a "general notes sheet" that note it as being frame to frame not lining to lining and it'll then specify "gyprock 10mm as nominal lining". This is perfectly normal practice, designers and builders won't spec 3020x3020 as you will not notice 20mm on the finish product. Ask the council if there is a chance of getting build over easement exemption. Sometimes easements are unused and 24cm is not all that much. Good luck. And yes any builder… 2 13745 i imagine you also have another contract with an architect? and yeah, whatever other's said about special conditions and appendices 16 15980 |