Hertfordshire · England
Bath & shower resealing (mastic) in Newnham, Hertfordshire
We travel to Newnham for bath, shower and sink resealing with new mould-resistant silicone. Everything is done in place, with a one-year guarantee.
- Unsealed corners
- Black mould in the sealant
- A messy previous reseal
DIY kit or professional repair?
The difference between a kit and a professional repair is mostly in the preparation and colour. We prepare the area properly, mix the colour on site and polish the finish to match, then guarantee it for a year.
If you’re set on a kit, follow its instructions closely, ensure the area is clean and completely dry, and give it the full curing time. If it doesn’t work out, we can still repair it properly.
Bath resealing in Newnham, done in place
We cut out all of the old sealant, deal with any mould, and reseal with new mould-resistant silicone. We reseal baths, showers, sinks and worktops, including the awkward bits behind the taps. We work on kitchen worktops & sinks, baths and shower trays & enclosures, and common reasons people contact us are water getting behind the bath or tray and mould you can’t clean out.
Peace of mind is built in: each job carries a one-year guarantee, and we explain what it covers before booking.
- Where
- Newnham (SG7)
- County
- Hertfordshire
- Guarantee
- A year, on every repair
- Quote
- Free and fixed, from your photos
- Phone
- 0345 017 0787
- Page updated
- 23 October 2026
How we price bath resealing
There is no area surcharge for Newnham. The price reflects:
- The material and finish
- What kind of damage it is
- How much damage there is
- Doing more than one item at once
A repair generally costs much less than people expect, particularly next to the cost of replacement. Send photos and we’ll give you the exact figure.
Getting a price from pictures
You can take the photos on your phone. Ensure they show:
- The material, if you know it
- Details of any past repairs
- Your postcode, so we can check dates
- A close-up of the damage, in focus
Email us a picture of the damage and a wider shot of the whole item, with your SG7 postcode, and we will come back with a fixed quote.
Landlord and trade work in Newnham
Housing associations and facilities teams use us for planned and reactive repairs. A repair avoids taking out and refitting, which is easier on the people living there.
Landlords, letting agents and housing providers in Newnham use us as well as homeowners. Repairing between tenancies keeps void periods short, and it costs much less than replacing.
Is resealing worth it?
Resealing is a small job. Putting off a reseal can let water reach the walls and floor, which costs far more to put right. What it costs depends on how much damage there is and what kind, what it’s made of and how many items we do on one visit. You get a fixed quote from your photos, so you know the cost before booking.
Why choose Surface Doctor in Newnham
- We leave the room as we found it
- One-year guarantee on every repair
- Repair technicians who travel to you, UK-wide
- Everything repaired in place
See our prices page.
Newnham: your questions answered
What areas do you cover?
The entire UK, including all of Hertfordshire. Send your postcode with your pictures and we will offer you dates.
What happens once I’ve sent pictures?
You get a fixed price and available dates. If we need another angle, we’ll ask.
Is there a call-out fee?
Travel is included in the price, with the same prices everywhere we work.
When can you do it?
That depends on our diary for your area. Send pictures with your postcode and we will reply with the earliest dates.
Is it OK to have pets in the house?
Keep pets and children away from the work area on the day, so the repair isn’t disturbed while it cures.
What information do you need?
A close-up, a wider photo and your postcode. After that, we just agree a date.
What happens if you find more damage?
We stop, show you and agree any change before carrying on. Nothing extra is done without your say-so.
I’m a tenant. Can you help?
Of course. Check with your landlord; we can send the quote to them too.
Towns and villages near Newnham
Also in Newnham
What your bath or shower is made of matters
Shower trays
We put weight on a tray before sealing it, for the same reason.
Baths
We fill the bath before sealing, so the joint is at its widest.
Do you need bath resealing in Newnham?
Poor ventilation speeds things up: moisture sits on the joints longer, and mould takes hold.
Most people get in touch when they notice one of these:
- An untidy old seal
- Unsealed corners
- Leaks at the edges
- Stained silicone
What to look for in a quote
- What protection goes down before work starts
- Whether they match the colour on site
- What happens if the damage is worse than the pictures show
- What the guarantee covers, and for how long
Aftercare tips
To keep it looking its best:
- Dry the seal after bathing
- Reseal at the first sign of lifting
- Keep bottles off the joints
- Run the extractor fan during and after showers
Good ventilation is the best protection, and wipe the joints after use.
Black mould in sealant isn’t just unsightly; it shows moisture is getting in. An early reseal keeps water where it belongs.
Newnham and the surrounding area
Newnham is about 3 miles north-east of Letchworth, in Hertfordshire. Wherever you are in the SG7 postcode area, we carry out the work at your property. Newnham is one of 381 places in Hertfordshire we cover. Our jobs stretch from Newnham to London (36 miles away).
Our visits in SG7 work the same way as everywhere else we cover. From Ashwell Road and Caldecote Road or anywhere nearby, a technician can come to you. Close by, we cover Caldecote (1 mile north-west), Bygrave (2 miles south-east), Ashwell End (2 miles north), Bury End (2 miles north) and Ashwell (2 miles north-east). Larger places within reach include Stevenage (8 miles south), Welwyn Garden City (15 miles south), Hitchin (6 miles south-west), Letchworth (4 miles south-west), Letchworth Garden City (4 miles south-west) and Benslow (6 miles south-west).
Local landmarks in Newnham
In Newnham, that means homes near Church of St Vincent and The Knights Templar School. The closest station to Newnham is Baldock station, roughly 2 miles south. Further afield, we also cover the area around Bygrave House (1.5 miles south-east) and Fairfield Hospital (3 miles south-west). Not far away are Arlesey Old Moat and Glebe Meadows.
What we do, step by step
We begin by going over the job with you, so there are no surprises. Then the area is sheeted and masked and the work begins. Allow around two hours, and we’ll tell you if anything changes.
- The surrounding area is protected and the joints masked.
- Old sealant and residue are removed.
- We clean, treat and dry the joint.
- Fresh silicone is applied in a continuous bead.
- The bead is smoothed, the tape removed and the seal left to cure.
Preparing for the visit
- Make sure the area is dry
- Mention any parking restrictions or tricky access
- Open a window if you can
Get a quote
For most jobs, pictures are all we need to give you a price. Add a line about what happened and your postcode, and we will reply with a fixed quote and the earliest dates we have.
Advice
About our accreditations · Every repair comes with a one-year guarantee.
