Boarding a loft is a process that is relatively simple, so it can be done by a homeowner or DIYer to keep costs down. We have a number of loft boards to choose from to create your boarded loft, from OSB board to moisture-resistant chipboard, general-purpose hardwood plywood and more.

But how do you board a loft, why should you install loft boards, how much does it cost to board a loft, and how do you lay loft boards? We try to answer all your questions in this quick guide to boarding a loft.

If you have any questions about which loft boards are best for your project, or want to know more about a specific project, don’t hesitate to get in touch – call 01752 692760 or use the live chat and our team of experts will be more than happy to offer advice.

Why board your loft?

There are a number of benefits to boarding a loft, but the first and most obvious reason to board a loft is to create flooring. Once there is flooring within the loft, you can start using it for storage, and as space is becoming increasingly sought after, this is a major benefit.

This extra storage space can help you to declutter your home, making the amount of useable space within the home greater too. Having this extra space will help to increase the potential selling value of your home, as well as creating a nicer environment to live in.

Boarding the loft is a way to reduce heat loss, as it creates another barrier to any heat escaping from the roof. This is particularly key because when loft boards are installed, insulation is often installed at the same time. Reducing heat loss also reduces the amount of energy required for heating, which in turn will result in lower utility bills.

What does it cost to board a loft?

As with all projects, there is no set cost for boarding a loft. The overall cost will depend on a number of factors, including the loft area, the type of boarding you’re using, and whether you’re going to board the whole loft space or just a section of the loft for storage purposes.

Employing professionals to board a loft can cost as much as £1000 or more, whereas the materials themselves can cost as little as £300. Of course, this cost is an estimate, and prices do vary depending on the size of the loft, the amount of boarding and the geographical area.

How to board a loft

1. Preparation

Before starting to board your loft, ensure that you have the correct safety gear in place – this will typically include overalls, gloves and a dust mask, as well as shoes that allow for easy movement.

You’ll also need to set up some sort of temporary platform on which you can work – this can be a piece of board that is placed across some of the ceiling joists.

2. Measure the loft area

The first step is to measure the area you’re going to board. This will allow you to calculate the number of loft boards you’ll need. We’d recommend using purpose-built loft boards as they tend to have tongue and groove fittings for easy installation, and they are also often shorter, so easier to get through your loft hatch. Choose from our range of loft boards here.

3. Insulation

The next step is to ensure you have insulation within your loft floor. If not, this is the perfect time to install loft insulation.

4. Add supports if required

When installing loft boards, it is important to ensure that the insulation within the loft is not squashed down, as this reduces the effectiveness of the insulation and can lead to condensation which will often result in damp, mould and rot. Therefore, if the insulation lies above the roof joists the loft floor will need raising. This can be done by using supports, such as Loftleg products that are available from Roofing Superstore.

The supports just need to be attached to ceiling joists or roof trusses, spaced around 1m apart, and then the loft boards can be installed directly onto the supports. This results in a secure raised loft floor that allows the insulation to work effectively.

5. Lay loft boards

Now lay the first loft board across the joists, ensuring the end of the board does not overhang the joist. If it does, cut it to ensure that it only reaches the centre point of the joist, so that the adjacent board will also be able to be securely fixed to the joist.

Next lay the other loft boards, in a staggered pattern to ensure the joins between boards do not join up. Use around 2-3 screws per join, and don’t forget to check the tongue and groove connections are fitted flush.

6. Add infill where required

Running along the loft, you’ll experience gaps as the staggered pattern continues. These gaps can be filled with pieces of infill which simply need to be cut as you go along. If necessary, use a hammer to lightly tap the infill pieces into place before securing them with screws as you would with normal-sized loft boards.

If you are still unsure or want to know more about how to lay loft boards, don’t hesitate to give the team a call and they will be happy to help – 01752 692 760.

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