Hertfordshire · England
Mastic man in AL6
Based in AL6? Our applicators cover Welwyn, Oaklands and Tewin and the rest of the district, inside and out.
Places in AL6
- Welwyn
- Oaklands
- Tewin
- Tewin Wood
- Ayot Green
- Burnham Green
- Rableyheath
- Pottersheath
- Ayot St Lawrence
- Harmer Green
- Ayot St Peter
- Welwyn Garden City
- Haldens
- Digswell
- Monkswood
Our services across AL6
- Floor & skirting joints
- Bathroom & kitchen resealing
- Glazing & conservatory sealant
- Gutter, fascia & soffit sealing
- Regrouting
- Remedial sealant & repairs
- Commercial & hotel sealant
- New-build mastic & snagging
- Fire-rated sealant
- Sand mastic for sash & case windows
- Window & door mastic
- External & façade joints
- All services
Let us know the job and your postcode for a quick quote: phone 0345 464 0079 or email us.
Neighbouring districts
Across Hertfordshire
Every town in Hertfordshire
Areas we cover
Our bathroom resealing service in AL6
The secret of a lasting bead is the preparation. The old sealant is removed to the last smear, then the joint is cleaned, degreased and treated for mould. Only once it’s dry does the new bead go on. We work on shower trays & enclosures, baths and sinks & splashbacks, and common reasons people get in touch are damp behind the bath or under the tray and black spots spreading through the bead.
On the day, we start by going over the job with you, so you know exactly what we are doing. We protect the surfaces around the joints before any work begins. The work normally takes two to three hours for a typical bath, depending on how much old sealant there is.
- First, each joint is checked for movement and signs of water.
- The old silicone is cut out completely, along with the film it leaves on the tiles.
- The joint is cleaned, degreased and treated for mould.
- With the joint dry, and any bath loaded with water, a single bead of anti-fungal silicone is applied.
- We tool the bead to a neat finish and give you the cure time, generally around 24 hours.
How we quote
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Why choose Mr Mastic
- Approved under the ARBOMaster scheme
- Sealant colour chosen to suit
- Over 20 years’ experience
- Neat joints and a tidy finish
How to get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work and send you a clear quote.
What’s near Welwyn
Locally, jobs take us to homes and businesses close to Stable Door pub, Danesbury Park and Monk's Walk School. Also close by are Homerswood Primary and Nursery School (1.1 miles south-east) and Parish Church of St Mary (under half a mile north). Welwyn’s nearest station is Welwyn North station, roughly 1.1 miles south-east of the centre. Nearby you’ll also find Queen Elizabeth II Hospital (3.5 miles south) and Datchworth Museum (2.7 miles north-east). Open spaces near Welwyn include Mardley Heath.
Bathrooms and kitchens across AL6
AL6 has homes of every age, old and new, with plenty of rented property in places like Welwyn Garden City, Welwyn and Oaklands. Sound sealant and clean grout keep water out and rooms looking cared for.
The South East is one of the drier parts of the UK, though outside sealant still needs a dry, clean joint, so work across AL6 is planned around the weather.
Welwyn: For site and facilities teams at buildings such as Monk's Walk School, washroom and kitchen sealant there needs the same care as at home, and schools and businesses are part of our work as well as homes. If you live in an older home near Parish Church of St Mary, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Why it fails
Plenty of failed sealant has been laid over the top of older sealant. New silicone won’t bond to old silicone, so it peels, leaks and hides mould behind it.
Look out for these signs:
- Damp behind the bath or under the tray
- Sealant that has split, shrunk or peeled away
- Black mould in the silicone that will not clean off
- Failed sealant on the screen profile
What sealant work can’t fix
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- Movement from a bath with loose feet or no proper support
- A cracked shower tray or bath (that needs repair or replacement)
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What happens if it’s left?
Bleach and mould sprays may lighten black marks for a while, but where mould is inside the silicone it normally comes back. Cutting it out and resealing with anti-fungal silicone is the fix that lasts.
What your quote should include
- What product goes in the joint
- How long to leave it before use
- Are they insured?
- What the quote includes, VAT included or not
What affects the cost of bathroom resealing
We don’t publish a price list, because jobs vary so much. The quote depends on:
- The size of the job
- Any mould that needs treating
- Access and height
- The old material and how stubborn it is
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- What’s wrong with the joints now
- Where the property is
- How many joints, rooms or windows are involved
- If someone has resealed it before
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
AL6: your questions answered
Are you insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned.
Can landlords and businesses book you?
Yes, we do. Domestic, commercial and hotel work are all part of what we do, and we are fully insured.
Can mouldy silicone be sorted out?
Yes. We strip the bead, treat the joint and lay new anti-fungal silicone.
Can I choose the colour of the sealant?
There’s a choice: white, clear and colours to suit tiles and worktops. We can help you pick when we quote.
Where is Mr Mastic based?
Our base is Crawley. We work across South East England, London and Scotland.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.