I built a small storage platform in the attic of my new house back in 2013, using 16mm MDF boards directly screwed onto the rafters. The insulation up there is a wool mix with some fiberglass, which can be itchy. I'm planning to install an attic ladder and extend the platform by about 5 or 6 sqm, focusing on a narrow passage and a small spare bedroom, plus a small toilet, where there should be enough wall support under the rafters. However, I've read conflicting opinions about whether I should have installed the floor on battens instead of directly on the rafters. The existing small platform (around 2 sqm) has functioned well for 12 years, and the insulation won't be squashed. I don't want to remove the current boards if I don't have to. Also, I'll have to reposition some large evaporative ducting, which will be a hassle. Can anyone weigh in on whether these battens are really necessary?
2 Answers
I had a similar situation years ago and ended up dealing with cracked sheetrock due to sagging rafters from the weight I put on them. Although you're in a better climate, don't underestimate the cumulative weight over time. If you're reasonably sure that your rafters are solid and won't sag with the added load, you might be alright. Just be prepared in case you need extra support later on!
It sounds like you're using battens as sleepers to create some height for insulation. In places with significant cold, those extra inches can be crucial. However, if you're in Perth where the climate is milder—especially regarding heat—you might not need that added height for airflow or insulation since you're not replacing the current insulation. Just keep an eye on what you’re planning to store up there and be cautious not to overload the rafters. If the current setup has held up well, extending it might not be a problem!
Yeah, I agree with you! It really comes down to your local climate and what you're storing. If it’s not heavy stuff, you should be fine. Just be sure everything is well supported!
Thanks for sharing your experience! I'm planning to keep it light with storage, but I'll keep an eye on it as the years go by. A little caution goes a long way!