Oxfordshire · England
Window Mastic in Highmoor Cross
Window mastic across Highmoor Cross and nearby, with old sealant always removed completely and a 12-month guarantee.
- Leaking joints at the ends of sills
- Gaps left after new windows were fitted
- Draughty joints inside around the window
About our window mastic in Highmoor Cross
Whether it’s one leaking patio door or every frame on the house, you’ll get a clear quote before we start. Just phone 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached. We are often asked to deal with rushed sealant from a window installation and cracked or shrunken mastic around the frame, on aluminium frames, timber windows & doors and window sills.
Somewhere as small as Highmoor Cross, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
There’s a 12-month guarantee on every job.
- Where
- Highmoor Cross (RG9)
- Wider area
- Oxfordshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. We seal those with a sealant suited to masonry.
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A tidy bead in anthracite grey, black or a matching colour suits the frame.
What happens on the day
On the day, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before we start. Most jobs take a few hours for a handful of frames, longer for a whole house. Somewhere like Highmoor Cross 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.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Tell us if parking is tricky
- Mention any leaks or damp you’ve noticed
- Let us know about stairs, lifts or work at height
Get a quote
To get a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.
Advice
Frames and glazing around Highmoor Cross
Historic houses like Greys Court (about 1.6 miles east) are a reminder that the area around Highmoor Cross has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near Church of St Paul, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Highmoor Cross is about 5 miles north of Caversham, in Oxfordshire. From the centre of Highmoor Cross to the outskirts, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Highmoor Cross is one of 443 towns and villages in Oxfordshire where we work. Our Reading page covers work nearby, about 7 miles away.
Jobs for window mastic in RG9 is quoted and booked the same way as anywhere else. Window mastic is available to properties on Holly Close and The Glebe. We also cover Highmoor (1 mile north-west), Shepherd's Green (1 mile south-east), Kingwood Common (1 mile south), Catslip (1 mile north) and Nettlebed (2 miles north). Further out, we also cover Didcot (12 miles west), Abingdon-on-Thames (15 miles north-west), Thame (13 miles north), Henley-on-Thames (4 miles east), Benson (7 miles north-west) and Chinnor (11 miles north).
Local landmarks in Highmoor Cross
We work in homes and buildings around The Dog and Duck pub. Highmoor Cross’s nearest station is Henley-On-Thames station, about 4.1 miles east. For a walk, there’s Warburg Nature Reserve.
Work for landlords, hotels and businesses
We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
FAQs for Highmoor Cross
Is Highmoor Cross in your area for window mastic?
Yes. We work across London and the South East, and Highmoor Cross is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Do you cover smaller places like Highmoor Cross?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
Do you have insurance?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Honest limits
Before you book, it’s worth knowing the limits too:
- Broken hinges, locks or handles
- A failed sealed unit that has misted up
- Worn gaskets, brush seals or a door that has dropped
Not sure which it is? You can call 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Window sills
- Aluminium frames
- uPVC windows
- Patio & French doors
- Composite doors
- Timber windows & doors
Also near Highmoor Cross
What else we do in Highmoor Cross
What affects the cost of window mastic
Your quote is based on your job. We look at:
- The number of rooms or windows
- The number and length of the joints
- Whether the work is at height
- Whether there’s mould to deal with
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- The address or postcode of the job
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
- What the problem is, such as mould, gaps, leaks or cracking
There’s no standard price list. Instead, we send you a clear quote for your job. To get started, call 0345 464 0079 or send us an email.
Signs you need window mastic in Highmoor Cross
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
The problems people usually mention when they call are:
- Untidy mastic left by window fitters
- Leaking joints at the ends of sills
- Mastic that’s falling out in pieces
- White mastic on grey or black frames
If you let a flat or house near Henley-On-Thames station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Comparing quotes
- The length of the guarantee
- Which colour the sealant will be
- What product goes in the joint
- What insurance they hold
What happens if it’s left?
Working on frames from a ladder with a sealant gun isn’t easy, especially upstairs. We cut out properly, back deep gaps and tool every joint neatly, in a sealant suited to the wall. Around Highmoor Cross, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear quote for the lot.
Why book with us
- ARBOMaster approved applicator
- A choice of colours where the product allows
- Experience in homes, commercial sites and hotels
- Quality sealants from Arbo and Everbuild
See what affects the cost and our reviews.