Hertfordshire · England
Bath Resealing for Old Knebworth homes
Bath, shower and sink resealing with new mould-resistant silicone in Old Knebworth, carried out at your home and guaranteed for a year.
- Black spots in the silicone
- Sealant that’s split or lifting
- Water getting behind the bath or tray
Bath resealing at your home in Old Knebworth
Resealing is quick, but it transforms the look. Clean, white joints make a bathroom look cared for, and they protect the walls and floor. Common call-outs are for black mould in the sealant and sealant that’s split or lifting, across basins & vanity units, shower trays & enclosures and wet rooms.
We guarantee the work for a year. If something isn’t right in that time, we come back and put it right.
- Where
- Old Knebworth (SG3)
- County
- Hertfordshire
- Guarantee
- A year, on every repair
- Quotes
- Free and fixed, from your pictures
- Telephone
- 0345 017 0787
- Last updated
- 23 October 2026
What we cannot put right
We’d rather lose a job than do one that will not last, so here’s what a repair can’t put right:
- Gaps too big for silicone alone
- A bath or tray that moves, until its support is fixed
- Water damage behind the bath that needs a builder
Not sure? Send photos and we’ll give you a straight answer.
Materials we work on in Old Knebworth
- Shower trays & enclosures
- Baths
- Basins & vanity units
- Wet rooms
- Kitchen worktops & sinks
Materials and what they mean for the repair
Sinks and worktops
We reseal basins, vanity tops and kitchen worktops, with the joint fully dried first.
Baths
We fill the bath before sealing, so the joint is at its widest.
Keeping it looking good
To keep it looking its best:
- Clean the sealant gently and regularly
- Replace the seal when mould sets in
- Let steam out after showers
- Store bottles on a shelf
Don’t scrape the sealant with anything sharp, and do not stand bottles on the seal.
Black mould in sealant isn’t just unsightly; it shows moisture is getting in. An early reseal keeps water where it belongs.
Common questions in Old Knebworth
Are there extra charges for Old Knebworth?
No. Our quotes include travel, with the same prices everywhere we work.
Do you work in Old Knebworth?
Yes. We cover the whole UK and come to Old Knebworth. Send pictures and we will quote, or call 0345 017 0787.
Can you do more than one item on the same visit?
Of course, and it normally saves money. Just add the extra items to your photos and we will quote them together.
What do you need from me?
Some photos, your postcode and how to reach you. On the day, we only need access to the room.
Will it make a mess?
We protect the room with dust sheets and masking first, and we clean up when we’ve finished.
What happens if you find more damage?
If we find something the pictures didn’t show, we explain it first. You decide whether to go ahead.
Do you hold any accreditations?
We hold CHAS, Constructionline, SafeContractor, SMAS Worksafe and Builder’s Profile accreditations.
When can you do it?
It depends on the time of year and where you are. Send pictures with your postcode and we’ll reply with the earliest dates.
What we do, step by step
We work cleanly and quietly, so you can carry on at home. Protection goes down first, then the work takes about two hours for a bath. Before we leave, we explain how soon it can be used and how to care for it.
- The surrounding area is protected and the joints masked.
- We remove the old sealant and every trace of residue.
- The joint is cleaned, treated and dried.
- We run a continuous bead of new silicone.
- We smooth the bead, remove the tape and leave it to cure.
Preparing for the visit
- Keep a parking space free if you can
- Let us know about parking or access
- Clear toiletries, mats and anything else from around the area
Getting a price
Ring 0345 017 0787, or send us photos through the quote form. With one close-up and one wider picture, we can price the job the same day in most cases.
Read more
DIY kit or professional repair?
You can buy a DIY kit for most repairs, and they can tidy up a tiny mark. The trouble is colour and preparation: they come in a handful of shades, and if the surface isn’t prepared the repair will not last.
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, and the work is guaranteed.
Common problems we fix in Old Knebworth
Black mould is the most common reason people reseal. It grows into the sealant itself, so cleaning can’t get it all out.
Most people contact us when they notice one of these:
- Water getting behind the bath or tray
- Unsealed corners
- Silicone smeared on tiles
- Discoloured, yellow sealant
Before you book anyone
- Who turns up on the day
- What aftercare is recommended
- How the room is protected while they work
- How long it needs to cure
Old Knebworth and the surrounding area
Old Knebworth is about 3 miles south-west of Stevenage, in Hertfordshire. From the centre of Old Knebworth to the outlying streets, we offer exactly the same service: fixed prices, tidy work and a one-year guarantee. We cover all 381 towns and villages across Hertfordshire. We work right across the region, from Old Knebworth to London (26 miles away).
Every address in SG3 is within our area. Jobs here include addresses on Old Knebworth Lane and Park Lane and the roads around them. Other places close to Old Knebworth include Nup End Green (1 mile south-west), Driver's End (1 mile south-west), Rableyheath (1 mile south), Pottersheath (1 mile south) and Langley (2 miles north-west). Larger places within reach include Hemel Hempstead (13 miles south-west), Stevenage (3 miles north-east), St Albans (10 miles south-west), Welwyn Garden City (5 miles south), Harpenden (7 miles south-west) and Hitchin (6 miles north-west).
Around Old Knebworth
In Old Knebworth, that means homes near Church of St Mary and St Thomas, Knebworth Park and Barnwell School and the streets around them. The closest station to Old Knebworth is Knebworth station, about 1 mile east. Nearby you will also find Lister Hospital (3.7 miles north) and Stevenage Museum (2.2 miles north). Not far away are Mardley Heath.
Why reseal now?
Putting new silicone over old does not last. It soon peels, and mould stays trapped behind it. A proper reseal removes the old first. A few things move the price: access, material, the extent of the damage and whether we can do several items together. Photos let us give you a fixed figure.
Why choose Surface Doctor in Old Knebworth
- Straight answers about what a repair can do
- No need to remove anything
- One visit for most repairs
- One price list for the entire UK
Read our full price list.
Also near Old Knebworth
Also in Old Knebworth
What affects the price in Old Knebworth
You will not pay by the hour. The price depends on:
- The type of damage
- How easy the damage is to reach
- How much damage there is
- How hard the colour is to match
We charge the same wherever you are, with no extra for Old Knebworth. The job itself decides the price: how much damage, what it’s made of and how many items.
How to get a fixed price
Most quotes are done from photos alone. To help us price it:
- Daylight if possible, and no flash reflection
- A coin or ruler next to the damage for scale
- The material, if you know it
- Any earlier repairs or coatings
You don’t need a survey visit. Nearly every job can be priced from pictures: send a close-up, a wider shot and your postcode, and we will reply with a fixed quote.
About our accreditations · Every repair comes with a one-year guarantee.
