New roofs designed and built from the timbers up
For new builds, extensions, garden rooms and dormer conversions. We set out the pitch, cut and fit the timbers, then build up membrane, battens and covering in whatever material suits the building.
Covers new roof construction, extension roofs, garden room roofs and dormer roofs, pitched or flat.
Updated September 2026
Working with an architect or engineer? Send us the drawings and we will price off them. Get in touch.
From rafters to gutter, finished together
Rafters, purlins and firrings cut and fitted on site
Breather membrane and treated battens
Slate, tile, standing seam metal or GRP finish
Lead valleys, verges and abutments dressed by hand
Fascia, soffit and seamless gutter fitted as part of the job
One crew does the whole roof, so there is nobody to blame when something does not line up.
Which material suits a new roof
Natural slate on period-style houses and where planners ask for stone
Fibre cement slate for the slate look on a tighter budget
Concrete or clay tile for most new builds and extensions
Standing seam metal on modern extensions and low pitches
Fibreglass GRP or Lava 20 where the roof is flat
The structure has to carry the covering. Natural slate is heavy, and we check the design before we quote it.
New roof questions we get asked
Can you work from an architect drawing?
Yes. Send the roof plan and section and we will price off the drawings, then confirm on site before we order materials. We flag anything in the detail that will cause a problem at the valleys or abutments.
How long does a new roof on an extension take?
A single storey extension roof is usually two to four working days once the walls are up and the wall plate is on. A dormer conversion takes longer because of the lead work and the flashings around the windows.
Do you fit the gutters and fascia too?
Yes, and we prefer to. Doing the roof, the lead, the fascia and the gutter as one job means the falls and the outlets are set for the actual roof area rather than fitted afterwards by someone else.
What pitch does a slate roof need?
Natural slate generally wants 22 degrees or steeper, fibre cement slate can go a little lower, and concrete tile depends on the profile. Below about 15 degrees we would be recommending metal or a flat roof system instead.
How much does a new roof cost?
Pitched roofs are priced per square metre, before scaffold: roughly €90 to €130 for concrete tile, €110 to €160 for fibre cement slate, €120 to €170 for clay tile, €150 to €220 for natural slate and €130 to €200 for standing seam metal. A 30 to 40 m² flat roof on a rear extension in GRP is typically €3,800 to €6,500. We price off the drawings, then confirm on site.
Everything we do on a roof
We cover all three counties: roofers in Kerry, roofers in Cork and roofers in Limerick.
Choosing the covering on a new roof
On a new build or an extension the covering is still an open question, so it is worth twenty minutes. Pitch rules some options out before budget does, and the wrong choice on an exposed site shows itself in about five years. Every one of these pages gives you the pitch, the weight and a fitted price range.
For a feel for the budget before we survey, read how much a new roof costs in Kerry and Cork.
Building or extending? Let us price the roof
Send the address or the drawings. We will come out, talk through the options and give you a fixed written price.