Loft ladder installation cost: what drives the price

The type of ladder

A basic folding aluminium ladder is the simplest to fit. Timber ladders with a hatch door already attached, often sold as a complete kit, need more care to set up but give a neater finish. Concertina and telescopic ladders suit tight spaces but have their own fitting requirements. The ladder's weight rating, the number of sections and whether it includes handrails all affect both the product price and the fitting time. The different options are compared in the loft ladder types guide.

Is the hatch big enough?

Many older hatches are too small for a ladder. Each ladder lists a minimum hatch size, and the opening must also be long enough in the direction the ladder slides or folds. If the hatch is the right size and in the right place, the job is mostly fitting the ladder and adjusting it. If not, the hatch needs enlarging, which is the single biggest extra in most loft ladder jobs.

Trimming joists

Enlarging a hatch usually means cutting through at least one ceiling joist. A cut joist must be supported by trimming: new timbers fixed across the opening to carry the load from the cut joist to the ones either side. This is proper carpentry and takes time, especially in older houses with irregular joists. In modern houses with trussed roofs, the truss members must not be cut at all without engineering advice, which can limit where a hatch can go.

• Ladder type and quality
• Whether the hatch needs enlarging
• Trimming joists around a new opening
• Trussed roofs limiting the hatch position
• Insulated, draught sealed hatch door
• Boarding around the hatch to step onto
• Making good the ceiling below
• Head height above the hatch

The hatch door and insulation

Most ladder kits include a hatch door, but the quality varies. An insulated, draught sealed hatch keeps warm air from escaping into the loft, which saves heat and reduces condensation in the roof space. Upgrading the hatch door adds to the cost but is usually worth it, especially if the old hatch was a loose panel of plywood.

Boarding around the hatch

A ladder is only useful if there is somewhere safe to step off at the top. A small boarded landing around the hatch is often fitted at the same time, and is sometimes the first step towards boarding more of the loft later. The landing should not crush insulation, so raised supports may be needed, as covered in the raised loft boarding guide.

Making good below

When a hatch is enlarged, the ceiling around it is cut, and the new opening needs lining with timber and trim so it looks finished from the landing below. Cracks around the opening are filled and the area is left ready for painting. Older lath and plaster ceilings can crack more widely than plasterboard, which may add some repair work.

How to get an accurate price

Photos make a big difference. Send one of the hatch from below with a tape measure across it, one from inside the loft showing the joists around the hatch, and one showing the head height above it. Note whether you want any boarding at the top. That is usually enough for a clear written quote.

Need it sorted? Book a loft ladder installation

Book through loft ladder installation, where the fitting process is explained, or see loft hatch installation if the opening needs work first. Send your photos through the contact page.

Frequently asked questions

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