Hampshire · England

Blackmoor Glazing Silicone

We cover Blackmoor for glazing silicone for conservatories, rooflights, glass panels and shower screens. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.

  • Glass-to-glass joints that have split
  • Water running down inside the glass
  • Rooflight joints letting water in

Trusted glazing silicone in Blackmoor

What the job involves on each surface

Glass-to-frame joints

Old sealant is removed carefully from the glass before new glazing silicone goes in.

Shower screens

Silicone holds the water in on frameless screens. We reseal without scratching the glass.

Glazing silicone in Blackmoor

Glass replacement is not something we do and a misted double-glazed unit needs a glazier. Our work is the sealant joints, which is where many leaks start. If you are dealing with a quick top-up bead that didn’t last and leaks where conservatory glass meets the frame, we can help, on shower screens, glass-to-frame joints and rooflights alike.

Around Blackmoor, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.

Whatever the size of the job, it’s backed by our 12-month guarantee in Blackmoor and across Hampshire.

Place
Blackmoor (GU33)
Region
Hampshire
Cover
12 months on all our work
Quotes
Quoted before any work starts
Telephone
0345 464 0079
Page updated
26 October 2026
Fresh white silicone going into the corner where a shower screen meets the tiled wall

Questions from Blackmoor

Do you cover smaller places like Blackmoor?

Yes, Blackmoor is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.

I let a flat near Liss station. Can you help?

Yes, we work for letting agents and landlords. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.

Do you reseal glass shower screens?

We can. We remove the old silicone carefully, and the joints are cleaned and resealed.

Can you quote for more than one area?

Yes. Tell us about everything you’d like done and we’ll quote it together.

Do you guarantee glazing sealant work?

Our one-year guarantee covers every job.

What sealant do you use?

Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.

Do you seal glass balustrade bases?

Yes. The sealant joint at the base can be renewed. Fitting glass is a separate trade.

Should I try DIY first?

That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.

What happens on the day

Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours, depending on how many joints need doing, and the area is left clean. Somewhere like Blackmoor needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.

  1. First, we check where the water gets in.
  2. The failed silicone is cut out without marking the glass or frame.
  3. We clean the glass and frame so the new silicone bonds.
  4. We lay the new bead and tool it smooth.
  5. Each joint is checked and, where possible, water-tested.

How to prepare

  • Try not to wet indoor joints just before the visit
  • Keep pets and children clear of the area while we work
  • For business premises, tell us about site rules or sign-in

How to get a quote

For glazing silicone in Blackmoor, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before we start.

Ask for a quote

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Quotes for glazing silicone in Blackmoor

You will get a clear quote before we start. It’s based on:

  • Mould in or behind the old joints
  • When we can work, for business premises
  • The type of sealant required
  • Access and height

The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.

What to tell us for a quote

You don’t need to know the technical terms. Just tell us:

  • Any previous sealing or DIY work
  • What’s wrong with the joints now
  • The type of property
  • Where the job is, and your postcode

Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.

When it is not the sealant

We’d rather tell you now than do work that won’t last, so these are the limits:

  • A sagging or failing conservatory roof
  • Frames that have decayed or split
  • Misting between the panes of a double-glazed unit (a failed unit for a glazier)

Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.

Joints and surfaces we work on

  • Conservatory frames
  • Rooflights
  • Shower screens
  • Glass-to-frame joints
  • Glass balustrade bases
  • Glass-to-glass joints

Why act early in Blackmoor

Resealing cannot fix a failed unit or a cracked panel. We say so plainly and point you to a glazier or roofer. Older cottages and farmhouses around Blackmoor can have timber floors and frames, and water through a failed joint can rot timber if it’s left.

We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or drop us an email.

Why choose Mr Mastic in Blackmoor

  • More than 20 years in sealant work
  • You choose the colour before work begins
  • One-year guarantee on every job
  • Trusted Arbo and Everbuild sealants

Read how sealant jobs are priced and what customers say.

What glazing silicone looks like in Blackmoor

Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.

If you look after a building such as St Matthew's Church of England Aided Primary School, its window and door frames need their mastic kept sound, just like a home’s. If you let a flat or house near Liss station, leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies.

Blackmoor is about 5 miles south-east of Alton, in Hampshire. Anywhere in GU33, we cover glazing silicone for homes and businesses. 683 places in Hampshire are on our list, large and small. For nearby work, see our Portsmouth page, about 21 miles away.

Work in GU33 is quoted and booked the same way as anywhere else. If you need glazing silicone at a property on Blackmoor Road and Sotherington Lane or anywhere close by, we can help. Other places close to Blackmoor include Woolmer (1 mile south-east), Greatham (1 mile south), Longmoor (2 miles south-east), Passfield (2 miles east) and Weavers Down (3 miles south-east). Larger places within reach include Basingstoke (15 miles north-west), Farnborough (15 miles north), Fleet (13 miles north), Horndean (14 miles south-west), Aldershot (12 miles north-east) and Alton (5 miles north-west).

Landmarks near Blackmoor

Locally, jobs take us to homes and businesses close to Mill Chase Academy. For rail, the closest station is Liss station, about 3.5 miles south of the centre. Other landmarks nearby include The Romany Museum (2.3 miles west) and Chase Community Hospital (1.4 miles north-east). Open spaces near Blackmoor include Selborne Hill and Deadwater Valley.

Map of Blackmoor © OpenStreetMap contributors

Do you need glazing silicone in Blackmoor?

Glass and frames expand and contract with the temperature at different rates. Over years, that movement tears the silicone.

If you can see any of these, it’s time to have the joints looked at:

  • Sealant that was laid over old silicone and failed
  • Silicone pulling away from the glass
  • Leaks where conservatory glass meets the frame
  • Rooflight joints letting water in

For an older house near a landmark such as St Matthew's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.

What to look for in a quote

  • What happens if the job turns out different
  • Are they insured?
  • Is the old sealant removed completely?
  • Is VAT in the price?

10 questions to ask before you book

How to look after the new joints

To keep the joints looking good and working properly:

  • Act on drips or damp patches early
  • Look over the glazing joints once a year
  • Avoid strong solvents on or near the sealant
  • Open vents or windows to let moisture out

Follow the cure time we give you before the joints get wet. After that, clean glass with a mild cleaner.

Drips or damp near a glazing joint shouldn’t be ignored. It may be sealant, or something else, and we will tell you which.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job