Damp & DPCs

223 topics in this forum

1. DPC laid with no mortar underneath

   By flanagaj, September 7
   • 9 replies
   • 445 views
   • 
   • Oz07
   • September 9

2. Cavity tray / cavity closer detail

   By flanagaj, September 5
   • 3 replies
   • 204 views
   • 
   • Dave Jones
   • September 7

3. Does this detail look ok?

   By flanagaj, August 23
   • 13 replies
   • 528 views
   • 
   • JohnMo
   • August 24

4. Damp

   By Jasonsm19, August 21
   • 3 replies
   • 225 views
   • 
   • Jasonsm19
   • August 21

5. Visqueen pre formed corners. Wasting money?

   By flanagaj, July 8
   • 3 replies
   • 791 views
   • 
   • flanagaj
   • July 8

6. Should I 'bridge' my DPC to tank the exterior of my property to protect from flooding?

   By boxrick, April 24
   • 5 replies
   • 1.3k views
   • 
   • Roger440
   • April 25

7. Snagging

   By Stevep007, January 29
   • 11 replies
   • 2.1k views
   • 
   • saveasteading
   • January 31

8. New garage - slab/frame interface

   By BotusBuild, January 25   

   • garage
   • timber
   • (and 3 more)

     Tagged with:

     • garage
     • timber
     • slab
     • dpc
     • dpm
   • 2 replies
   • 1.2k views
   • 
   • BotusBuild
   • January 25

9. Help me diagnose this 1 2

   By Pappa, December 29, 2025
   • 33 replies
   • 3.4k views
   • 
   • BotusBuild
   • January 13

10. Mildew on air tightness tape underneath window - advice wanted on potential causes and solution

    By Omnibuswoman, January 3
    • 10 replies
    • 1.9k views
    • 
    • Omnibuswoman
    • January 5

11. Musty smell, worried about interstitial condensation

    By Archer, January 29, 2025
    • 20 replies
    • 5k views
    • 
    • Archer
    • November 20, 2025

12. Damp / stain on a chimney wall - 1st floor period house (Haringey, London)

    By Olivier D, October 21, 2025
    • 5 replies
    • 2.1k views
    • 
    • Redbeard
    • October 29, 2025

13. Escape of water in my house

    By Gary1140, October 26, 2025
    • 1 reply
    • 1.6k views
    • 
    • dpmiller
    • October 26, 2025

14. Water ingress newly installed composite door

    By evekell, October 19, 2025   

    • dpc
    • composite door
    • (and 7 more)

      Tagged with:

      • dpc
      • composite door
      • water
      • ingress
      • seals
      • weatherproofing
      • newly installed
      • porch removed
      • builder
    • 10 replies
    • 2.1k views
    • 
    • evekell
    • October 20, 2025

15. DPCs and Beam and Block floor

    By Stu84, August 12, 2025
    • 6 replies
    • 2.5k views
    • 
    • Gus Potter
    • August 12, 2025

16. Sandstone cellar

    By MarkGee, July 23, 2025
    • 11 replies
    • 2.6k views
    • 
    • MarkGee
    • July 23, 2025

17. Lapping DPM and DPC for a concrete slab

    By Simonharry, May 23, 2025   

    • dpm
    • dpc
    • (and 1 more)

      Tagged with:

      • dpm
      • dpc
      • slab foundation
    • 2 replies
    • 3.1k views
    • 
    • Mike
    • June 22, 2025

18. No DPC & Damp - shock horror

    By LD84, June 20, 2025
    • 3 replies
    • 2.3k views
    • 
    • ProDave
    • June 21, 2025

19. Mortar joints appear damp?

    By Tadders, June 16, 2025
    • 2 replies
    • 2.1k views
    • 
    • Tadders
    • June 17, 2025

20. DPC breached

    By Pappa, June 7, 2025
    • 8 replies
    • 2.8k views
    • 
    • Andeh
    • June 13, 2025

21. Damp and mould around kitchen cooker hood vent

    By Kathmandu, May 26, 2025   

    • kitchen cooker hood
    • damp
    • (and 1 more)

      Tagged with:

      • kitchen cooker hood
      • damp
      • mould
    • 1 reply
    • 2.4k views
    • 
    • ProDave
    • May 26, 2025

22. Damp plaster board (dot and dab)

    By Overthefence, May 11, 2025
    • 7 replies
    • 3.4k views
    • 
    • Spinny
    • May 18, 2025

23. Retrofit Survey take 2

    By Mark H, March 26, 2025
    • 2 replies
    • 2.4k views
    • 
    • JohnMo
    • March 26, 2025

24. Retrofit Survey

    By Mark H, March 25, 2025
    • 0 replies
    • 2.2k views
    • 
    • Mark H
    • March 25, 2025

25. Should I go for flush flooring or standard 150mm step

    By mads, March 21, 2025
    • 4 replies
    • 2.8k views
    • 
    • Big Jimbo
    • March 21, 2025