Table of Contents
- 1 Can I put plywood over blown in insulation in attic?
- 2 How long does it take for attic insulation to settle?
- 3 How much weight can attic beams support?
- 4 Can you put boards over blown in insulation?
- 5 How much weight can attic hold?
- 6 Can my attic support my weight?
- 7 What happens if you displace insulation in an attic?
- 8 How do you use a blown in insulation machine?
Can I put plywood over blown in insulation in attic?
Once the insulation is down, you can turn your attic into valuable storage space by covering the floor with plywood. It will also make the attic a safer place in which to walk.
How long does it take for attic insulation to settle?
Most of the settling will occur in the first couple of months, but the cellulose will continue to settle for up to two years.
Is it safe to walk on attic beams?
If you’re on the rafters, you’re OK. It’s best to stay near a vertical support. If you’re crawling across the middle of a long span, it may bow and possibly crack seams in the drywall below.
Can you walk on blown insulation?
Unless you can safely traverse the attic in the truss webbing or on boards suitable to crawl/walk on, its best to stay out. If you find blown in cellulose and can’t see all areas, say so and move on.
How much weight can attic beams support?
Attic Joists for Live Loads In many cases, ceiling joists for dead loads are designed to carry 10 pounds per square foot (psf), as opposed to the 40 or greater psf that live-load joists must carry. Span length is different for every room.
Can you put boards over blown in insulation?
If blown-in insulation is used, control the height or thickness of the layers so boards can by laid over top without having to compact the filler. By adding the boards, you increase storage space for items not needed often, allowing you to move those items out of the main house and reduce clutter.
Can you lay rolled insulation over blown insulation?
Adding rolled, batt, or blown-in insulation over existing insulation is not a problem. Do not tack down any rolled insulation. This smashes or flattens the insulating material and reduces its R-value. Air seal the area before you add insulation, so it works well to keep your home energy-efficient.
How many inches of blown fiberglass insulation is R38?
Fiberglass Chart
| R-Value | Thickness | Bags / 1000 Sq Ft |
|---|---|---|
| R49 | 16.25” | 22.6 |
| R44 | 14.75” | 20.1 |
| R38 | 12.75” | 16.8 |
| R30 | 10.25” | 13.0 |
How much weight can attic hold?
The weight is supported by the joists A 10 pounds per square foot live load can be handled by an attic that isn’t designed for storage. 20 pounds per square foot live load can be handled by an attic with limited storage.
Can my attic support my weight?
If you’re talking about the floor of an attic, then it may, or may not, support the weight of a person. If you’re talking about walking on the roof and therefore relying on the roof truss and attic to support you, it highly likely that the roof will support you. But it would be best if you still didn’t walk on it.
What is the best way to insulate an attic?
Air gaps may be causing heat loss, costing you money. Loose fill or blown-in attic insulation is a great solution that can help lower your energy bills. Learn all about insulation materials, safety procedures and how to install your own blown-in attic insulation.
What is the best way to insulate a crawl space?
Batt and roll insulation works well between joist and stud spaces or if you have a wide-open space or a crawlspace. See Install Batt and Roll Insulation for details. Loose fill (blown-in insulation) is best for tight spaces or if your attic already has a layer of insulation that just needs to be topped off.
What happens if you displace insulation in an attic?
If you displace insulation in order to move around in the attic, don’t forget to put it back as you leave. Exposed floor joists can cause condensation on the inside of the ceiling, peeling paint and nail rusting.
How do you use a blown in insulation machine?
Instructions. 1 Step 1: Connect the Hose to the Insulation Machine. Connect the hose to the blown-in insulation machine. Then feed 1/2 a bag of fill into the machine 2 Step 2: Fill Your Space With Insulation. 3 Step 3: Raise the Floor to Create Storage Space. 4 Step 4: Attach the Plywood. 5 Step 5: Continue to Fill the Attic.