Oxfordshire · England
New Build Mastic in Sandford St Martin
Problem with your new-build sealant joints in Sandford St Martin? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Sealant that never bonded to the surface
- Skirting joints opening in the first winter
- Gaps opening as the house dries out and settles
New build mastic for homes and businesses in Sandford St Martin
We never seal over a failed new-build bead. New silicone will not bond to old silicone, so it all comes out before we clean, dry and reseal. We work on show homes, windows & doors and skirting & floors, and people most often call us about smeared, uneven beads picked up at snagging and sealant that never bonded to the surface.
Work in a small place like Sandford St Martin just needs the journey and access planning, and the work itself is the same as on any site.
Big or small, it’s backed by our one-year guarantee in Sandford St Martin and across Oxfordshire.
- Place
- Sandford St Martin (OX7)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Quotes for new build mastic in Sandford St Martin
We quote each job individually. These are the things that affect it:
- Access and height
- Working hours on commercial sites
- Mould in or behind the old joints
- The number of rooms or windows
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts.
What we need to know
Before you ask for a quote, have a think about:
- Pictures of the joints, sent by email
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
To get a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We will give you a clear price before any work starts.
Places near Sandford St Martin
Other services in Sandford St Martin
For landlords and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
For anyone letting property in or around Sandford St Martin, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
When to call us in Sandford St Martin
Sealant is often one of the last jobs before handover. Dusty, unprimed joints are common, so the bead never bonds properly.
Most people get in touch after spotting one of these:
- Beads laid onto grit and dust from the build
- Messy sealant that spoils new finishes
- Skirting joints opening in the first winter
- Leaking shower tray seals in a new home
Around Sandford St Martin, as everywhere, new build mastic is only as good as the preparation behind it.
Before you book anyone
- How hidden problems are handled
- How much experience the applicator has
- Whether they’re fully insured
- How the joint is cleaned and prepared
What we can’t put right
We will always be straight with you, so here’s what new sealant won’t do:
- Disputes or warranty claims with your builder
- Baths and trays that move too much for sealant to cope with
- Leaks from pipes, valves or wastes, which need a plumber
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
- Windows & doors
- Plot handovers
- Show homes
- Bathrooms & en suites
- Kitchens
- Skirting & floors
Why it’s worth doing now in Sandford St Martin
If you’re still in the builder’s snagging or warranty period, ask them to put it right first. If it’s slow, or the same joint keeps failing, a proper reseal from a specialist is the next step. Where a wall is exposed, as many are in small places like Sandford St Martin, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Doing several joints on one visit normally makes better use of the time than several visits. We’ll send you a clear quote for the lot.
Why Sandford St Martin customers choose us
- Experience in homes, commercial sites and hotels
- Any old sealant cut out fully, not covered over
- Over 20 years’ experience
- An ARBOMaster approved applicator
Take a look at what affects the cost or customer reviews.
What new build mastic looks like in Sandford St Martin
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For new homes near Heyford station, it’s worth checking the sealant early, while snags are still fresh.
Sandford St Martin is about 9 miles south of Banbury, in Oxfordshire. Every kind of property in Sandford St Martin is covered for new build mastic, old or new, large or small. The work is guaranteed for a year. Our Oxfordshire coverage runs to 443 places, Sandford St Martin among them. Oxford is on our list too, about 14 miles from Sandford St Martin.
Jobs for new build mastic in OX7 is quoted and booked the same way as anywhere else. Local streets include Mill Lane, Manor Road and Ledwell Road, and we cover them all. Other places close to Sandford St Martin include Westcott Barton (1 mile south-east), Middle Barton (1 mile east), Nether Worton (2 miles north), Steeple Barton (2 miles south-east) and Duns Tew (3 miles north-east). We also work in nearby towns such as Oxford (14 miles south-east), Banbury (9 miles north), Bicester (10 miles east), Witney (11 miles south-west), Carterton (15 miles south-west) and Kidlington (9 miles south-east).
Local landmarks in Sandford St Martin
In Sandford St Martin, that means homes and buildings near The Fox Public House and the streets around them. For rail, the closest station is Heyford station, roughly 4.1 miles east. Well-known places in the area include Deddington Castle (4.5 miles north-east) and Old Forge Museum (Great Tew) (2.3 miles north-west).
FAQs for Sandford St Martin
Can you help a landlord with a rental near Heyford station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
Can you do new build mastic in Sandford St Martin?
Yes, Sandford St Martin is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
When is the sealant fully cured?
Different products cure at different speeds, so please follow the time we give you.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do you remove the old sealant?
Yes, every time. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Can you work from my snagging list?
Yes. Snagging lists are a common starting point for us. We agree the sealant items with you before work begins.
Which products do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Who should fix failed sealant in a new build?
While the snagging or warranty period runs, the builder should be your first contact. If they’re slow or the fix does not last, we can help.
Surface by surface
Skirting and floors
Floors and skirting move as the house dries and the heating runs. We use a flexible product rather than caulk.
Windows and doors
On new builds, external frame sealant can be patchy. We reseal it with a weatherproof, flexible sealant.
The process
You don’t need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the work takes anything from a few hours to several days, depending on the number of plots for a typical job. Somewhere as small as Sandford St Martin, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- The finished joints are checked and the cure times given.
Preparing for the visit
- Tell us about any water getting in
- Clear items away from the joints we’re working on
- Tell us about any previous sealing or DIY attempts
Getting a quote
Every job is quoted individually, so the first step is telling us about yours. Simply call 0345 464 0079 or send us an email and describe the job and send pictures if you have them.