Kent · England
New-build mastic & snagging in Sandling, Kent
We cover Sandling for plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- New-build shower sealant that has already split
- Untidy sealant flagged on a snagging list
- Frame joints opening as the plaster dries
New build mastic in Sandling, done properly
Dust is the enemy of new-build sealant. Each joint is cleaned of dust and primed where the product calls for it, so the new bead bonds properly. Common call-outs are for cracked sealant around new window and door frames and second-fix sealing on new plots, on windows & doors, bathrooms & en suites and skirting & floors.
Around Sandling, older homes often have timber floors that move through the year, which is why skirting and threshold joints need a flexible sealant, not filler.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Sandling (CT21)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
The process
You don’t need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes a few hours for most snagging lists, longer for a run of plots in most cases. Somewhere as small as Sandling, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- Each joint is cleaned of dust and grit, then primed if required.
- We apply a sealant that suits each joint and tool it to a neat finish.
- We check every joint and tell you how long each needs to cure.
Preparing for the visit
- Mention any parking rules near the property
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
Getting a quote
We quote each job on its own. Just ring 0345 464 0079 or email us with the details and send photos if you have them.
Advice
Nearby places to Sandling
Other services in Sandling
How to look after the new joints
Looking after new joints is easy:
- Put sealant faults on your snagging list early
- Wipe joints with warm soapy water
- Wait for the cure time before using a resealed shower
- Avoid running a DIY bead over the old one
Keep the bathroom ventilated, especially in the first year. Use the extractor fan or open a window after showers to help keep mould away.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Early resealing keeps the job small and protects the rest of the house.
Quotes for new build mastic in Sandling
Jobs vary more than people expect. The main factors:
- Any working-time requirements on site
- The old material and how stubborn it is
- The product the joint needs
- The number and length of the joints
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or send us an email and we’ll talk you through it.
Helping us quote
You do not need to know the technical terms. Just tell us:
- The address or postcode of the job
- The rough size of the job
- What’s wrong with the joints now
- A few photos by email, if you can
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved.
What sealant work can’t fix
Sealant isn’t the answer to every problem, and we will tell you before work begins. Sealant will not put right:
- Broken tiles or a split tray
- Disputes or warranty claims with your builder
- Leaking fittings rather than failed sealant
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Windows & doors
- Bathrooms & en suites
- Plot handovers
- Kitchens
- Show homes
- Skirting & floors
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Signs you need new build mastic in Sandling
New homes are full of moisture from plaster, screed and concrete, which takes a year or two to dry out. Drying timber shrinks and pulls joints apart.
If you can see any of these, it’s time to have the joints looked at:
- Joints pulling apart as timber shrinks
- Worktop and upstand sealant coming away
- Leaking shower tray seals in a new home
- Sealant applied over dusty or wet surfaces
In and around Sandling, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- What product goes in the joint
- Who does the work, and how experienced they are
- Whether all the old sealant comes out first
- Are they insured?
What new build mastic looks like in Sandling
Sandling is close to the coast. New homes near the sea put their outside mastic to work from day one, so it’s worth checking at snagging. The South East is one of 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 Sandling station, it’s worth checking the sealant early, while snags are still fresh.
Sandling is about 1 mile north-west of Hythe, in Kent. If you need new build mastic in Sandling, it’s easy to get a quote: please ring 0345 464 0079 or email us. We are based in Crawley and cover Kent. Across Kent, we cover 922 places, Sandling among them. There’s also a page for Chelmsford, roughly 51 miles from Sandling.
Our applicators cover all of CT21 for new build mastic and the streets around it. We also cover the places around Sandling: Saltwood (1 mile south-east), Pedlinge (1 mile south-west), Hythe (1 mile south-east), Westenhanger (1 mile west) and Newingreen (1 mile west). Further out, we also cover Ashford (9 miles north-west), Canterbury (13 miles north), Dover (11 miles east), Folkestone (4 miles east), Tower Hamlets (11 miles east) and Hawkinge (4 miles north-east).
Local landmarks in Sandling
We work in homes and buildings around St Augustine's Catholic Primary School and Brockhill Country Park, among other places. Sandling has its own railway station: Sandling station. Other landmarks nearby include Saltwood Castle (0.9 miles south-east) and Hythe Museum (1.4 miles south-east). Open spaces near Sandling include Tolsford Hill.
What the job involves on each surface
Windows and doors
The gap between a new frame and its plaster reveal often opens up. We remove cracked sealant and apply a flexible one.
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. We cut out the failed bead, clean and prime, and reseal with anti-fungal sanitary silicone.
Your questions about new build mastic in Sandling
I let a flat near Sandling station. Can you help?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Do you cover Sandling for new build mastic?
Yes. We work across London and the South East, and Sandling is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear price.
Do you have insurance?
Yes. Mr Mastic is fully insured.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we will agree access with you when we book.
How much does new build mastic cost in Sandling?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or drop us an email and let us know what needs doing and where.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
How long before the joint can be used?
It depends on the product and the conditions. We tell you how long to leave it before we go.
Why does sealant fail so quickly in new builds?
Lots of new homes see sealant crack early, because the house is drying and settling. Rushed application on dusty surfaces makes it worse.