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--- down_pipes_gutters_and_other_rain_water_goods [2021/03/28 20:18]
mark [How to fix]
+++ down_pipes_gutters_and_other_rain_water_goods [2021/03/29 01:17] (current)
admin [How to fix]
@@ Line 1: / Line 1: @@
 ====== Down pipes, gutters and other rain water goods ======
 ===== Why Important =====
-It is very important that these are well maintained as leaks from them are a frequent source of water ingress to buildings and cause expensive and destructive outbreaks of dry rot. These items are made from cast iron, which can rust.
+This guide will cover the importance of monitoring, what to look for and when, how to repair, and what to avoid (to prevent long-term problems).
 ===== What to look for =====
+It is very important that these are well maintained as leaks from them are a frequent source of water ingress to buildings and cause expensive and destructive outbreaks of dry rot. These items are made from cast iron, which can rust.
 ===== When to look =====
+Examine the pipework, gutters and rain-hops carefully for any cracks or loose joints – watch for tell-tale marks on walls after rain. These must be repaired before any repainting is done.
 ===== How to fix =====
 Any areas of rust should be wire brushed back to a clean bright metal surface and then primed with two coats of a suitable metal primer. For more information see [[Railings]].
-It is often possible to find the original colours used on doors, windows, ironwork or other painted areas by examination of the hidden paint layers. However, changing colour from Black may require [[Seeking Listed Planning Permission]].
+The insides of gutters were traditionally painted with two coats of bitumen or tar as this is extremely water proof and is still the best material for this use.
+=== Re-painting Pipework ===
+Some older down pipes may have been previously painted with a black glossy bitumen finish. This can bleed through a paler coloured oil paint applied on top of it, giving dirty and unsightly brown streaks. To check if this is likely to happen, rub the black surface vigorously with a rag soaked in white spirits to see if the black paint will soften. If you do get streaks, then the black must be sealed with a bitumen sealer before applying an oil gloss paint, or a water based masonry paint can be used; this should not discolour.
+Down pipes and the underside of gutters are frequently painted a stone or grey colour in a gloss finish to blend into the stone. One colour that is particularly successful is called ‘Jim’s mix’, which is a mixture of equal parts of BS 08 B25 and BS 12 B21. //[NOTE: check if this is appropriate for Wirral Council Conservation]//
+As an alternative to black gloss finish, there are other excellent hard-wearing paints which are suitable, such as dark grey micaceous iron oxide paint which gives a discrete matt finish.
+It is often possible to find the original colours used on doors, windows, ironwork or other painted areas by examination of the hidden paint layers.
+Where the wall is being painted with a masonry paint, the down pipes may also be painted in the same material to help camouflage them.
+However, changing colour from Black may require [[seeking_list_planning_permission|Seeking Listed Planning Permission]].
 ===== Avoiding creating problems =====
+Do not use plastic or PVC piping for down-pipes, gutters or rain-pots.

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