Buckinghamshire · England
Gutter Sealing in Aylesbury
Sealing leaking gutter joints, end caps, fascias, soffits and roofline trims for Aylesbury, backed by a one-year guarantee. Ask us for a quote.
- Damp patches inside below a leaking gutter
- Wet patches on the wall under a gutter joint
- Gaps along fascia and soffit joints
Common problems we fix in Aylesbury
Gutter joints depend on seals that wear out. Sun and cold make the gutter expand and contract, and old seals crack or slip.
If you can see any of these, it’s time to have the joints looked at:
- Dripping gutter ends
- Trim joints where the sealant has failed
- Water dripping where gutter sections meet
- Gaps along fascia and soffit joints
In the older streets around Church of St Mary, an extension built onto an older house moves differently, and the joint between them takes the strain.
Questions to ask before you book
- What guarantee comes with the work
- What preparation is included
- Whether they’re fully insured
- What the cure time is
Gutter sealing in Aylesbury
Garage door frames let rain in when the sealant around them fails. The frame joint is cut out and resealed using a sealant made for outdoor use. Common call-outs are for garage door frames letting rain in and stop ends leaking at the end of a run, on garage door frames, gutter end caps and uPVC fascias.
Larger buildings in Aylesbury have plenty of movement joints, cladding joints and roofline trims. When those fail, water gets behind the face of the building, often unseen until it shows inside.
There’s a 12-month guarantee on every job, large or small.
- Place
- Aylesbury (HP21, HP19, HP20, HP18)
- Wider area
- Buckinghamshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Aylesbury
What else we do in Aylesbury
Common questions in Aylesbury
Is Aylesbury in your area for gutter sealing?
Yes. We work across London and the South East, and Aylesbury is part of that. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Can you help a landlord with a rental near Aylesbury station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Is it OK to seal over old sealant?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Aylesbury, along with the rest of our area.
Will sealing fix a sagging gutter?
Sealing a sagging joint won’t last. A gutter installer needs to refix it, and we will tell you if that’s what we find.
Are you insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will explain our choice.
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How we quote for gutter sealing
Every job gets its own quote. This is what makes a difference:
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
- The size of the job
- Whether there’s mould to deal with
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Asking for a quote
You do not need to know the technical terms. Just tell us:
- Any previous sealing or DIY work
- The problem you’ve noticed
- How we’d reach the joints
- Roughly how big the job is
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Guttering that needs replacing
- Fascias that need replacing
- Roof leaks, slipped tiles or failed flashing (a roofer’s job)
If in doubt, ring 0345 464 0079 or email us and we will say what we think before you book.
Joints and surfaces we work on
- uPVC fascias
- Gutter end caps
- Gutter joints
- Garage door frames
- Roofline trims
- Soffit joints
How it works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes anything from an hour or two to a few hours. Where a business in Aylesbury needs to stay open, out-of-hours working can be arranged, and homes are booked within our usual hours, Monday to Saturday.
- We start by tracing the leak and checking the gutter itself is sound.
- The joint or trim is cleaned out and old sealant removed.
- The joint is dried, because sealant will not bond to a wet surface.
- Gutter or exterior sealant is applied and finished.
- We look along the gutter and clear debris around the joints.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
- Mention if the joints have been sealed before
Getting a quote
Want a quote for gutter sealing? Please call 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
What gutter sealing looks like in Aylesbury
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Buckinghamshire UTC are buildings too, and its movement joints, gutters and trims need looking after like any other building’s. If you let a flat or house near Aylesbury station, a dripping gutter joint or loose fascia trim is easy to miss until damp shows inside.
Aylesbury is about 38 miles north-west of London, in Buckinghamshire. Homes, rented property, offices and hotels in Aylesbury can book us for gutter sealing. Every job comes with our 12-month guarantee. Aylesbury is one of 263 places in Buckinghamshire we cover. We also work in Oxford, about 18 miles from Aylesbury.
All of HP21, HP19, HP20 and HP18 is covered for gutter sealing. That includes homes and businesses on Market Street, Market Square and High Street. You’ll find Aylesbury on the A41 and A413, so it’s easy for us to get to. Other places close to Aylesbury include California (1 mile south), Queens Park (1 mile east), New Zealand (1 mile north), Walton (1 mile south-east) and Elmhurst (1 mile north-east). Within a short drive, we also cover High Wycombe (13 miles south), Chesham (11 miles south-east), Buckingham (14 miles north-west), Amersham (13 miles south-east), Princes Risborough (6 miles south) and Haddenham (6 miles south-west). Aylesbury is one of the larger places we cover in Buckinghamshire.
What’s near Aylesbury
Locally, jobs take us to homes and businesses close to Stocklake Park Community School, The Derby Arms Public House and Bearbrook Combined School. There’s a railway station in Aylesbury itself: Aylesbury station. Other landmarks nearby include Roald Dahl Children's Gallery (within half a mile east) and Royal Buckinghamshire Hospital (within half a mile north). The countryside around Aylesbury includes Coombe Hill.
Different surfaces, different methods
uPVC fascias
Joints between fascia boards can open over time. We seal them neatly with a matching sealant where possible.
Soffit joints
Soffit board joints can separate over time. They’re sealed to tidy the line.
Why it’s worth doing now in Aylesbury
Leaving a leaking end cap can send water down the wall all winter. It’s a small job to put right before the damage spreads. In a busy place like Aylesbury, a failed joint in a flat or office can send water into the space below, where it can go unnoticed until the damage is done.
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and send you a clear quote before work begins.
Why choose Mr Mastic in Aylesbury
- Sanitary silicone with an anti-fungal additive in wet areas
- 4.9 on Google from 180+ five-star reviews
- Over 20 years’ experience
- A choice of colours where the product allows
See our cost guide or what customers say.