Oxfordshire · England
Shirburn Window Mastic
Window mastic for Shirburn and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- White mastic on grey or black frames
- Untidy mastic left by window fitters
- Cracked or shrunken mastic around the frame
About our window mastic in Shirburn
Frames and walls do not move together. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. So the sealant has to stretch and recover, which is why we use a low-modulus product. If you have sealant in the wrong colour for the frame and black, perished sealant on frames, we can help, whatever the surface.
Mastic can only go onto a dry, clean joint, so window work in Shirburn is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
There’s a 12-month guarantee on every job, large or small.
- Where
- Shirburn (OX49)
- Region
- Oxfordshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Common problems we fix in Shirburn
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and timber moves with moisture as well as temperature.
Common reasons people contact us include:
- Rain getting in at the frame or under the sill
- Hard, cracked sealant around windows
- Black, perished sealant on frames
- Gaps between the frame and the inside reveal
In the older streets around All Saints Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Questions to ask before booking
- Whether you can choose the colour
- What guarantee comes with the work
- What insurance they hold
- How hidden problems are handled
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Look round the frames every year or so
- Keep timber frames painted
- Keep paint off silicone joints
- Keep jet washers away from the mastic
Keep the new mastic undisturbed while it cures, following the cure time we give you. Don’t point a pressure washer at the joints.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.
Landlords, agents and businesses in Shirburn
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
Different surfaces, different methods
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the threshold joint takes a lot of water. Each is cleaned, backed where deep and resealed.
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We’ll tell you which suits your home.
Your questions about window mastic in Shirburn
Is Shirburn in your area for window mastic?
Yes, Shirburn is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear price.
What guarantee comes with window mastic in Shirburn?
Every job comes with our 12-month guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Do you seal inside as well as outside?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We do one or both.
Can I paint over the new sealant?
Not if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
When is the sealant fully cured?
It depends on the product and the conditions. Before we leave, we will tell you the cure time.
Do you have sealant for grey or black windows?
Yes, in most cases. Tell us the frame colour when you get in touch and we’ll match it as closely as we can.
Will the old sealant be removed?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and you’ll get one quote.
What we do, step by step
The work is kept neat and contained to the area we’re working on. The job normally takes most of a day for a typical house, less for a few frames. Somewhere like Shirburn needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check how each frame can be reached safely.
- All the failed sealant is cut away.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Tell us if parking is tricky
- Plan for the work area to be out of bounds to pets and children
- Mention any tricky access
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or send us an email with the details and send pictures if you have them.
Advice
Nearby places to Shirburn
More services for Shirburn
Leave it or put it right?
A quick bead over the top of old mastic looks like an easy fix, but new sealant cannot bond to old, crumbling mastic. It soon lifts and the leak carries on behind it. The old mastic has to come out. In a small place like Shirburn, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
Why Shirburn customers choose us
- We never seal over old sealant
- Sanitary silicone with an anti-fungal additive in wet areas
- We agree the colour with you first
- One-year guarantee on every job
Read what affects the cost and what customers say.
What window mastic looks like in Shirburn
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Adwell House (about 2.4 miles north) nearby, there’s older building stock in the area around Shirburn as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you look after a building such as Icknield Community College, its window and door frames need their mastic kept sound, just like a home’s.
Shirburn is about 6 miles south of Thame, in Oxfordshire. Shirburn gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Shirburn is one of 443 towns and villages in Oxfordshire we cover. There’s also a page for Oxford, about 12 miles away.
Work in OX49 works the same way as everywhere else we cover. Local streets include Watlington Road, Castle Road and Blenheim Road, all of which we cover. Other places close to Shirburn include Lewknor (1 mile north-east), South Weston (2 miles north), Christmas Common (2 miles south-east), Postcombe (2 miles north) and Howe Hill (3 miles south). We also work in nearby towns such as Oxford (12 miles north-west), Didcot (11 miles west), Abingdon-on-Thames (13 miles west), Thame (6 miles north), Henley-on-Thames (9 miles south-east) and Benson (5 miles south-west).
Local landmarks in Shirburn
Typical jobs here are in homes near Watlington Primary School, St Mary's Church and The Chequers pub. Not far away are Aston Rowant NNR and Bald Hill.
What sealant work cannot fix
In fairness, some problems need a different trade:
- Worn gaskets, brush seals or a door that has dropped
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Damp problems in the wall away from the window
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly.
What we seal
- Composite doors
- Patio & French doors
- Aluminium frames
- Window sills
- uPVC windows
- Timber windows & doors