Oxfordshire · England
Christmas Common New Build Mastic
New build mastic for Christmas Common, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Joints pulling apart as timber shrinks
- Worktop and upstand sealant coming away
- Cracked sealant around new window and door frames
What happens on the day
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours for most snagging lists, longer for a run of plots. Somewhere as small as Christmas Common, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely, with no layer left behind.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- On commercial sites, let us know about site rules
- Tell us if parking is tricky
- Let us know about stairs, lifts or work at height
Get a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.
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How we handle new build mastic in Christmas Common
Our new-build work comes in two parts: plot mastic for developers, and putting right failed sealant for people who’ve bought a new home. Both get the same care over preparation, because that’s what rushed new-build sealant usually lacks. If you are dealing with gaps between new skirting and floors and joints pulling apart as timber shrinks, we can help, whatever the surface.
For a small place like Christmas Common, the journey and access are planned in advance, and once on site, the job is the same as anywhere.
Every job comes with a 12-month guarantee, wherever you are in Oxfordshire.
- Place
- Christmas Common (OX49)
- Wider area
- Oxfordshire
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Also near Christmas Common
Also in Christmas Common
Keeping the joints in good condition
So the new joints stay in good condition:
- Watch for new gaps as the house dries out
- Don’t seal over failed sealant yourself
- Report sealant problems to your builder during the snagging period
- Wait for the cure time before using a resealed shower
Leave the sealant for the cure time we give you before showering or bathing. Most silicones need around a day to cure enough for use.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Catching it early keeps the fix to the sealant and the new finishes intact.
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
Landlords, agents and businesses in Christmas Common
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll quote.
For anyone letting property in or around Christmas Common, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
What affects the cost of new build mastic
Call for a quick quote. What matters most is:
- How easy the joints are to reach
- The type of sealant required
- Whether there’s mould to deal with
- The amount of work
Combining jobs into one visit usually makes better use of the time than several visits. You’ll get one clear quote for the whole job.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Whether it’s a home or a business
- Any access issues, like height or stairs
- The address or postcode of the job
- How many joints, rooms or windows are involved
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
Christmas Common questions
Will you come out to Christmas Common?
Yes, Christmas Common 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.
Do you cover Christmas Common for new build mastic?
Yes. Our work covers London and the South East, and Christmas Common is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job.
Do you guarantee your work?
Yes. Every job comes with our 12-month guarantee.
Can you match the sealant colour to my new kitchen or bathroom?
White and clear are the most common, but sealant comes in other colours too. We match the colour to the finish.
Should I wait before resealing?
Any seal that is leaking should be redone straight away. For small cosmetic gaps, waiting until the house has settled can save doing them twice.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
New homes and floors in Christmas Common
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Christmas Common, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Christmas Common is about 8 miles south of Thame, in Oxfordshire. Christmas Common gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Christmas Common is one of 443 places in Oxfordshire we cover for new build mastic. Our Reading page covers work nearby.
Every address in OX49 is within our area for new build mastic, from the main roads to the quietest streets. Nearby, we also carry out new build mastic in Northend (1 mile east), Howe Hill (1 mile south-west), Shirburn (2 miles north-west), Cookley Green (2 miles south-west) and Ibstone (2 miles east). Further out, we also cover Oxford (14 miles north-west), Didcot (12 miles west), Abingdon-on-Thames (14 miles west), Thame (8 miles north), Henley-on-Thames (7 miles south) and Benson (6 miles west).
Around Christmas Common
Locally, jobs take us to homes and businesses close to Fox And Hounds Inn Public House, among other places. Green spaces nearby include Bald Hill and Aston Rowant NNR.
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Your warranty claim itself, which is between you and the builder
- Baths and trays that move too much for sealant to cope with
- Leaks from pipes, valves or wastes, which need a plumber
If you are not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before booking.
Where we work in Christmas Common
- Kitchens
- Show homes
- Bathrooms & en suites
- Plot handovers
- Windows & doors
- Skirting & floors
What we are called out for in Christmas Common
The first winter with the heating on dries a new home quickly. Skirting, frames and worktops pull away slightly and cracks appear in the sealant.
It’s worth asking for a quote if you see:
- Frame joints opening as the plaster dries
- Worktop and upstand sealant coming away
- Beads laid onto grit and dust from the build
- Skirting joints opening in the first winter
Whether the job is in Christmas Common itself or nearby, the right material for each joint matters as much as a neat finish.
Questions to ask before booking
- What happens if the job turns out different
- Whether all the old sealant comes out first
- What product goes in the joint
- Are they insured?