Oxfordshire · England
Shiplake Window Mastic
Our applicators work in Shiplake on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- A bead that doesn’t match the frame
- Black, perished sealant on frames
- Cracked or shrunken mastic around the frame
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Avoid harsh chemicals near the mastic
- Keep paint off silicone joints
- Avoid blasting the frames with a pressure washer
- Walk round the house once a year and look at the joints
Check the drainage slots in the frames are not blocked, so water can run away instead of sitting against the joint.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Catching it early keeps the fix to a reseal.
Window mastic in Shiplake, done properly
Around Shiplake we seal all kinds of frames: from uPVC casements to timber and aluminium, along with patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. We work on uPVC windows, timber windows & doors and patio & French doors, and people most often call us about mastic that’s falling out in pieces and gaps where the sill meets the wall.
In a village or hamlet like Shiplake, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Whatever the size of the job, you get the same 12-month guarantee in Shiplake and across Oxfordshire.
- Place
- Shiplake (RG9)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens on the day
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes anything from an hour or two to a full day, depending on how many frames there are, depending on the size of the job. In a small place like Shiplake, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- 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.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Mention if the joints have been sealed before
- Let us know if you’ve seen damp or leaks
- Keep pets and children clear of the area while we work
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, call 0345 464 0079 or drop us an email.
Read more
When something else is needed
In fairness, some problems need a different trade:
- Damp problems in the wall away from the window
- Worn gaskets, brush seals or a door that has dropped
- Misting between the panes of a double-glazed unit (that needs a new unit)
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
Joints and surfaces we work on
- Window sills
- Composite doors
- Patio & French doors
- uPVC windows
- Aluminium frames
- Timber windows & doors
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Shiplake homes and the weather
With historic houses such as Greys Court (about 4.1 miles north-west) nearby, there’s older building stock in the area around Shiplake as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Wargrave station, renewing tired window mastic between tenants heads off draught and damp complaints. Schools such as Shiplake Church of England School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. In the older streets around Church of St Peter and St Paul, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Shiplake is about 3 miles north of Woodley, in Oxfordshire. If you need window mastic in Shiplake, please ring 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Oxfordshire. 443 places in Oxfordshire are on our list, from the larger towns to small villages.
Postcode districts we cover here for window mastic: RG9. Close by, we work in Charvil (2 miles south), Twyford (2 miles south-east), Ruscombe (2 miles south-east), Hare Hatch (2 miles east) and The Holt (3 miles east). We also work in nearby towns such as Benson (12 miles north-west), Chinnor (14 miles north), Tilehurst (7 miles south-west), Wallingford (12 miles north-west), Little Heath (7 miles west) and Oakley (14 miles north).
Around Shiplake
Locally, jobs take us to homes and businesses close to The Plough pub, Blessed Hugh Faringdon Catholic School and Loddon Nature Reserve, among other places. For rail, the closest station is Wargrave station, roughly 0.9 miles east. Nearby you’ll also find Royal Berkshire Hospital (4.2 miles south-west) and Frazer Nash Archives (2.1 miles north). Open spaces near Shiplake include South Lake and Sonning Hill.
Common questions in Shiplake
I let a flat near Wargrave station. Can you help?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Will you come out to Shiplake?
Yes, Shiplake is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or send us an email.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
How do I get a quote for window mastic in Shiplake?
It depends on the job, so we quote each one individually. For a quick quote, ring 0345 464 0079 or drop us an email and tell us what needs doing and where.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Can resealing stop a draught around my window?
In many cases. Air often gets in between the frame and the wall, and resealing inside and out closes it.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Also near Shiplake
More services for Shiplake
How the job changes by surface
Composite doors
A composite door generally sits in a plastic outer frame, and the joint around it is sealed like a window. The bead is colour-matched to the frame.
Window sills
Every drop off the glass ends up on the sill, so the sill ends and the joint under the frame are vital. They’re cut out and resealed with exterior sealant.
Work for landlords, hotels and businesses
Letting agents and landlords in Shiplake can book us as well as householders. Resealing between tenancies keeps a property looking cared for.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
What happens if it’s left?
A quick bead over the top of old mastic looks like an easy fix, but new sealant can’t bond to old, crumbling mastic. It soon lifts and the leak carries on behind it. Proper resealing starts with removing the old joint. Where a wall is exposed, as many are in small places like Shiplake, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first.
Why Shiplake clients choose us
- Approved under the ARBOMaster scheme
- Every job guaranteed for a year
- You choose the colour before work begins
- Colour picked to suit the job