Buckinghamshire · England
Long Crendon Gutter Sealing
Gutter sealing for Long Crendon and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Open joints in fascias and soffits
- Leaking gutter joints and stop ends
- End caps that drip every time it rains
Questions from Long Crendon
Will you come out to Long Crendon?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Haddenham & Thame Parkway station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Do you have insurance?
Yes. We are fully insured.
Can you seal over the old sealant?
No, because it fails. We remove every bit of old sealant first, so the new sealant bonds properly.
What information do you need?
Let us know what needs doing and where, plus photos if you have them. We’ll ask anything else we need to know.
Do you guarantee gutter sealing?
Our 12-month guarantee covers every job.
Where are you based?
Mr Mastic is based in Crawley. We cover Long Crendon and the rest of Buckinghamshire.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
How we handle gutter sealing in Long Crendon
Gutter and fascia replacement isn’t our trade, and nor is roofing. What sealant does is close joints; it won’t fix a broken bracket, a cracked section or a blocked downpipe. We work on gutter joints, uPVC fascias and soffit joints, and common reasons people get in touch are trim joints where the sealant has failed and damp patches inside below a leaking gutter.
Outbuildings, garages and conservatories around homes in places like Long Crendon add more joints to look after. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Long Crendon (HP18)
- Region
- Buckinghamshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Do you need gutter sealing in Long Crendon?
End caps get knocked or pushed by water. If the seal fails, water escapes at the end and runs down the wall.
If you can see any of these, it’s time to have the joints looked at:
- Drips from gutter joints and end caps
- Dripping gutter ends
- Gaps along fascia and soffit joints
- Earlier gutter repairs that have peeled off
For landlords with property near Haddenham & Thame Parkway station, leaking gutter joints on a rental are best caught before they stain the walls.
Questions to ask before you book
- When the joint can take water or movement
- How the colour is chosen
- Whether they seal over old material or remove it
- How long the guarantee is
How it works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours, depending on the number of joints and the access from start to finish. A visit to Long Crendon is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by tracing the leak and checking the gutter itself is sound.
- Old sealant and dirt are removed from the joint.
- We make sure the joint is dry before sealing.
- Gutter or exterior sealant is applied and finished.
- The run is checked and any debris near the joints is cleared.
Preparing for the visit
- Let us know about parking restrictions
- Mention any tricky access
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
For gutter sealing in Long Crendon, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
Related advice
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Look along the fascias for open joints
- Don’t lean ladders against the gutter itself
- Clean out the gutters once or twice a year
- Watch the wall under the gutters for staining
Leave the new sealant to cure as we advise and avoid disturbing it.
If an end cap is dripping, deal with it before winter. Water down the wall all winter can cause damp inside.
Why deal with it now?
If the problem is a blocked downpipe, sealing won’t help. We look at what’s really happening and point you to the right trade if needed. Around Long Crendon, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
Leaving a failed joint generally makes the job bigger, not smaller. If you are unsure, ring 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Why us?
- Anti-fungal sanitary silicone in wet areas
- Old sealant always removed completely
- Domestic, commercial and hotel work
- An ARBOMaster approved applicator
Read our cost guide and our reviews.
How the job changes by surface
uPVC fascias
Gaps in fascias spoil the roofline. A neat bead closes them up.
Gutter end caps
Stop ends hold back water at the end of a run. When their seal fails, they drip.
What else we do in Long Crendon
What gutter sealing looks like in Long Crendon
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Long Crendon School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you live in an older home near Church of St Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Long Crendon is about 2 miles north-west of Thame, in Buckinghamshire. Whether you’re in the middle of Long Crendon or further out, we cover gutter sealing for every kind of property. Our Buckinghamshire coverage runs to 263 places, and Long Crendon is one of them. Our Oxford page covers work nearby, about 10 miles away.
Jobs for gutter sealing in HP18 is quoted and booked the same way as anywhere else. Local streets include High Street, The Square and Giffard Way, all of which we cover. Close by, we work in Chearsley (2 miles north-east), Thame (2 miles south-east), Moreton (3 miles south), Haddenham (3 miles east) and Cuddington (3 miles north-east). We also work in nearby towns such as Aylesbury (8 miles east), High Wycombe (15 miles south-east), Buckingham (15 miles north), Elmhurst (9 miles north-east), Southcourt (8 miles east) and Princes Risborough (8 miles south-east).
Local landmarks in Long Crendon
We work in homes and buildings around Lord Williams's School and The Eight Bells Public House. Long Crendon’s nearest station is Haddenham & Thame Parkway station, about 2.3 miles east of the centre. Well-known places in the area include Dinton Castle (4.7 miles east) and Thame Community Hospital (2.4 miles south-east). Open spaces near Long Crendon include Snakemoor.
What affects the quote in Long Crendon
Every job gets its own quote. These are the things that affect it:
- When we can work, for business premises
- The old material and how stubborn it is
- The number and length of the joints
- How many areas need sealing
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
What we need to know
When you call or email, these details help:
- What the problem is, such as mould, gaps, leaks or cracking
- A few pictures by email, if you can
- Whether it’s a home or a business
- How we’d reach the joints
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand, and we’ll take it from there.