Roof rain noise
How do you stop rain noise on a conservatory roof?
The short answer
The real cure is mass and insulation. Thin glass and polycarbonate act like a drum skin, so rain on them is loud inside the room. A solid insulated roof is the quietest option, and laminated or thicker glazing helps if you want to keep the glass. Blinds and cosmetic additions do very little. The right choice depends on your roof, your frame and how much light you want to keep.
Why rain is so loud under a conservatory roof, what reduces the noise, and which fixes are worth paying for.
Why rain sounds so loud under a conservatory roof
Rain does not make the noise by itself. The roof does. Each drop strikes a thin, stiff sheet that vibrates and passes the sound into the room beneath, much as a drum does when it is tapped. Glass and polycarbonate are both thin and light, so they have little to absorb the knock, and the room below is open, with hard surfaces that echo.
Hollow multiwall polycarbonate is often the loudest of all. The air-filled channels amplify the tapping and the sheets can rattle in their bars on windy days. Glass is a little quieter, but a single pane in a big roof still rings. A tiled roof is much quieter because it adds weight and a layer of insulation under the covering. Our guide to glass versus polycarbonate compares the two coverings in more detail.
The solid roof route
The most dependable way to quiet a conservatory is to swap the covering for a solid, insulated roof. Tiles or slates, batten and underlay, rafters and insulation between them all absorb and block sound, so rain becomes a soft background hum instead of a clatter. It also solves the heat and cold problems, which is why owners often ask about both together.
The trade-off is light, because a solid roof cuts the daylight and changes the view upward. Roof windows can restore some of it, and they keep the room feeling open. The structure underneath has to carry the extra weight, so the frame and base are checked first and the work is covered by the Building Regulations. See solid conservatory roofs for what is involved.
Keeping the glass and quietening it
If the glazed look matters to you, the covering can still be upgraded. Laminated glass has a plastic layer between two panes, and that layer damps vibration far better than a single pane does. Thicker panes also ring less. Some units are made specifically with sound in mind, and the supplier can tell you what they are rated for.
These roofs cost more than basic glazing and weigh more as well, so the frame has to be assessed. They also keep the brightness and the open view. Our page on the best glass for a conservatory roof looks at the choices.
The size of each pane plays a part. Large flat panels vibrate more than small ones, and a roof built from many narrow units breaks the sound up. A glazing contractor can tell you how a given unit compares, so ask for the performance in writing instead of relying on a sales line. Where the roof is near a tree or an overhanging gutter, drips from above add to the knocking, and trimming or clearing them can take the edge off the noise.
Quick fixes and what they achieve
Cheap fixes rarely make much difference. Foam or rubber strips under loose bars can stop rattling, and re-seating a sheet that has worked loose can cure a buzz. Both are worth doing if the noise is a clatter in wind rather than a roar in rain. Insulation panels fixed under an existing roof add a little mass, but they can trap damp, so fit them only after a check.
Blinds soften echo in the room, but they do not stop the roof carrying sound. Be wary of any product that promises silence for a small sum, since noise reduction comes from weight and layers. Our page on conservatory roof insulation explains what each approach can and cannot do, and why a roof that is quieter is almost always a roof that is better insulated as well.
Rugs, soft furnishings and curtains at the glazed walls take some echo out of the room, which makes the same rain sound less sharp. They do nothing to the roof, but they cost little and are worth trying while you decide on a bigger change.
Choosing what suits your roof
Tell us how loud the noise is, what the roof is made of today, and how much you value the daylight. At the survey we inspect the frame, take pictures, and give a plain verdict: fix a loose sheet, upgrade the glass, or fit a solid roof. If a small fix will do, that is what we will recommend, not a bigger job.
A written quote comes after the survey, giving one total for the agreed work. More choices are set out on the main conservatory roof replacement page. A photo of the roof, with a note about when the noise is worst, is the best way to start.
Do not expect any change to turn a conservatory into a recording studio. The aim is rain you can talk over, a roof that does not rattle, and a room you can use on a wet day without raising your voice. That is achievable, and the survey will show which route gets you there.
Related questions
Noise questions
Does thicker polycarbonate make a conservatory roof quieter?
A little. Thicker, multiwall sheets drum less than thin ones, but they are still light and hollow. If the noise is your main complaint, a solid roof or laminated glass is a much bigger step than thicker sheets.
Why does the conservatory roof rattle in the wind and not just the rain?
Usually because a sheet or pane has worked loose in its bars, or a seal has shrunk. That is often a simple fix: re-seat the panel, replace the seal or add packing. It is worth fixing before it lets water in.