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Two things work against glazing up here. Salt carried off the water settles on the glass and holds a film that ordinary rain does not shift, and gum litter from the bush-edge streets breaks down into a fine grit that sits in the frame and along the top edge. The result is a skylight that is not broken, just steadily darker, and most people only notice how much light they had lost when it comes back. Steep blocks and two-storey homes are common here, so access is usually the part that decides how the job gets done.
The glazing type, the condition of the seals and how the unit sits in the roof decide the method. An acrylic dome and a glass panel are not cleaned the same way.
Steep blocks and two-storey homes are normal here. We set access up properly rather than working off the edge of a pitched roof.
The outer surface is washed back so light gets through again, using a method suited to the material.
Salt residue, gum litter and lichen spotting are cleared off the glazing and out of the frame where they collect.
We look over the flashing and the roof around the unit and tell you if we notice something, such as a lifted seal or a cracked tile.
We check the finished glazing and take the debris we brought down off the roof with us.
Call 0478 688 951 or send the form with your address and how many skylights you have.
We come out, check the skylights and the roof access, and price the job before it starts.
We clean the glazing, clear the frame and surrounds, and do a final check of the area.
Monkeys Roofing cleans skylights across the Northern Beaches and the rest of Sydney. Access is assessed on site, and on a steep or two-storey block that is usually what sets the price.
Yes. Salt settles as a film that rain alone does not remove, so coastal glazing goes dull faster than glazing further inland. It is the main reason skylights near the water need cleaning more often than people expect.
This service covers the exterior glazing, which is where the salt, gum litter and lichen build up and where the light is being lost. The interior glass is generally reachable from inside the house.
No. A clean removes what is blocking the light. A leak is a flashing or seal problem and needs a repair. If we see something like that while we are up there we will tell you.
If the light coming through has dropped off, the glazing is usually the reason. Call us on 0478 688 951 or send the form for a free on-site quote anywhere on the Northern Beaches.
Manly · Fairlight · Balgowlah · Seaforth · Clontarf · Freshwater · Curl Curl · Dee Why · Collaroy · Narrabeen · Warriewood · Mona Vale · Newport · Avalon Beach · Palm Beach · Brookvale · Frenchs Forest · Belrose · Elanora Heights · Killarney Heights
Also servicing surrounding Northern Beaches suburbs. See our Northern Beaches roofing page, or how we handle skylight cleaning across Sydney.
Australian standards and Code requirements we work to, with the source for each.
Observatory Hill has averaged around 1,213 mm of rain a year on records kept since 1858. Everything on the roof, from panels and skylights to gutters, has to keep working through that volume of water and the grit it carries off the surface.
NSW work health and safety law requires a safe work method statement for construction work where a person could fall more than two metres. Single-storey gutter and roof work clears that line, which is why the job is planned, harnessed or edge-protected before anyone gets on the roof.
Source: SafeWork NSW, working at heights
SafeWork NSW reports that most serious and fatal falls happen from roofs, ladders and building edges at four metres or under, and a fall from two metres can kill. A single-storey Sydney house is squarely inside that range.
Source: SafeWork NSW, falls from heights
Last updated: 13 August 2026
Quoting skylight cleaning in the Northern Beaches is not the same job as quoting it elsewhere in Sydney. Colorbond warranty asks for a six monthly wash: The standard warranty requires fresh water washing at least every six months of any roof area rain does not wash naturally, and does not cover failure… That is the kind of detail that changes the materials, the timing and the paperwork on a roof in Manly or the streets around it. Everything below links to the council or standard it comes from, so you can check it yourself.
The standard warranty requires fresh water washing at least every six months of any roof area rain does not wash naturally, and does not cover failure to replace corroded fasteners. On a coastal home that means eaves, awnings and wall abutments need washing deliberately.
Source: BlueScope, Colorbond roofing sample warrantyCategory 1 vegetation carries a 100 metre buffer on the Council map and categories 2 and 3 carry 30 metres, so a property with no trees on it can still be mapped simply because of the reserve next door. Work on mapped land can pull in AS 3959 requirements.
Source: Northern Beaches Council, bush fire prone landThe Rural Fire Service advises against box gutters and complicated roof shapes on bushfire prone land because they trap debris, and warns that second storey gutters make last minute clearing dangerous. Removing litter from roof, valleys and gutters before summer is part of protecting the house.
Source: NSW Rural Fire ServiceBlueScope names Manly Beach as its metropolitan example of a surf marine environment, the harshest of its three salt classes under AS 4312. Wind, shelter and areas the rain never washes push the real corrosivity higher still, which is why the steel grade used here is not the one used inland.
Source: BlueScope Technical Bulletin TB-35 and AS 4312:2019Class 3 fasteners are only acceptable beyond 1km from marine influence. From 200m to 1km Class 4 is required, and inside 200m even Class 4 is not enough without checking with the supplier. Most of the ocean strip sits inside that band, so standard screws rust out long before the sheeting does.
Source: BlueScope TB-16 and AS 3566.2We cover Manly, Fairlight, Freshwater, Curl Curl, Dee Why, Collaroy, Narrabeen, Warriewood, Mona Vale, Newport, Bilgola, Avalon, Whale Beach, Palm Beach, Frenchs Forest, Belrose, Terrey Hills, Forestville, Killarney Heights, Balgowlah, Seaforth, Brookvale, Cromer, Elanora Heights, Bayview and Church Point.
The standard warranty requires fresh water washing at least every six months of any roof area rain does not wash naturally, and does not cover failure to replace corroded fasteners. On a coastal home that means eaves, awnings and wall abutments need washing deliberately.
Category 1 vegetation carries a 100 metre buffer on the Council map and categories 2 and 3 carry 30 metres, so a property with no trees on it can still be mapped simply because of the reserve next door. Work on mapped land can pull in AS 3959 requirements.
The Rural Fire Service advises against box gutters and complicated roof shapes on bushfire prone land because they trap debris, and warns that second storey gutters make last minute clearing dangerous. Removing litter from roof, valleys and gutters before summer is part of protecting the house.
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