You can insulate this area in the same way to would insulate a standard loft – by laying wool insulation between the joists. This is cheap and straight forward. The stud walls – These are the small walls at the end of the sloping ceiling. You can insulate these by stapling wool insulation or adding rigid boards.

What is the best insulation for an attic conversion?

An insulation board, like Kooltherm K107, is your best choice for an attic conversion. Use your measurements to mark out where you need to cut your insulation boards. Your boards should be lightly butted, with a tight fit between them.

Where does the insulation go in a loft conversion?

You should insulate between the roof of the loft and the new ceiling which you would install up there. This is the most cost-effective type of loft insulation – read more about loft conversion cost here, and it is also one of the simplest to do.

Can you lay loft insulation over existing insulation?

Wet insulation can lead to mold, mildew, or even the rotting of your ceiling or roof rafters.” In fact, you can add new insulation over the existing installation in other areas of your home, not just the attic. And you don’t even have to choose the same material used in your existing insulation.

How do you insulate a warm loft?

Warm loft. An alternative way to insulate your loft is to fit the insulation between and over the rafters – these are the sloping timbers that make up the roof itself. You can use rigid insulation boards, carefully cut to size, or you can have foam insulation sprayed between the rafters.

Can I insulate my own attic?

For DIY attic insulation, you’ve got two choices: loose fill or batt (the common term for blanket insulation). Both can be added to uninsulated attics or layered over existing material. Once you’ve decided which type is best for you, examine the material options and prices to home in on the right product.

Is it worth adding insulation to attic?

Installing attic insulation this winter is a worthwhile long-term investment because it can significantly decrease your heating bills. As an added benefit, when the hot D.C. temperatures come back, the attic insulation will also minimize your air conditioning bills.

How can I make my loft conversion warmer?

How To Keep Your Loft Warm During Winter

  1. Insulate, insulate, insulate. Insulation is the simplest step you can take to maintain a warm temperature in your loft space. …
  2. Install radiators. …
  3. Towel rails. …
  4. Consider underfloor heating. …
  5. Dress your windows. …
  6. Portable heaters.

Can I insulate the underside of my roof?

Open-cell spray polyurethane foam or closed-cell spray polyurethane foam (ccSPF) insulation can be sprayed along the underside of the roof sheathing to provide a conditioned and insulated attic space that can be durable and efficient in all climate zones (see Figure 1).

Can you put insulation between roof rafters?

The general advice we give is that you should always insulate between and above the rafters (warm roof) or between and under the rafters (cold roof).

Should I remove old loft insulation?

In most circumstances removing your old insulation isn’t necessary and it can actually be quite beneficial to leave it. This is as most insulation will retain its thermal properties so leaving it in place will mean that you continue to benefit from it whilst also having an additional layer of insulation on top!

Can Celotex be used for loft insulation?

Using rigid insulation board as loft insulation

Some people may prefer to use rigid insulation board to insulate the loft space – for example Celotex or Kingspan – the process is pretty similar to above, although you will need less depth to achieve the same insulation levels (than mineral wool).

Should I insulate my attic floor or ceiling?

roof insulation is no-contest. The floor wins every time. Insulating the floor is standard practice for an unfinished attic space. The exception to this rule takes place when families opt to convert an unfinished attic space into something usable or livable.

Is it OK to spray foam attic?

At the end of the day, both attic spray foam insulation systems work just fine. You just have to realize they are different systems with ventilation being the main difference. If you insulate the attic floor, you’re going to need free air vents and make sure they are maintained properly over the long-term.

Can I spray foam my attic myself?

Quote from the video:
Quote from Youtube video: And you can't stick your finger through it and it has a higher r-value. Per inch really amazing r-value per inch. And it is only applied on an attic roof deck.

Is R 19 insulation Good for attic?

Most homes only have R19 in attics. To give you an idea that’s only 5 1/2 inches of insulation. That’s ok for your walls.

How thick does my attic insulation need to be?

about 10 to 14 inches

The recommended level for most attics is to insulate to R-38 or about 10 to 14 inches, depending on insulation type.

Is R38 insulation good for attic?

As of 2016, the standard building code for attic insulation in L.A., Orange, Ventura and surrounding counties is R-38.

What R-value do I need for attic?


Depending on where you live and the part of your home you’re insulating (walls, crawlspace, attic, etc.), you’ll need a different R-Value. Typical recommendations for exterior walls are R-13 to R-23, while R-30, R-38 and R-49 are common for ceilings and attic spaces.

Is R30 insulation good for attic?

The average recommended level is 14 inches of R49. In Zone 2, the average minimum requirement for attic insulation is 9 inches of R30 fill. The average recommended level is 17 inches of R60. In Zone 3, the average minimum requirement for attic insulation is 9 inches of R30 fill.

Is R 13 insulation good?

R13 often does a good job of reducing cold temperatures in many of the country’s southern regions. Since many homes have 2×4 wall framing, particularly in their basements, R13 insulation is typically the primary choice for many property owners.