# New Zealand Roofing Failures from Untreated Timber **URL:** \ **Category:** Construction Fails\ **Created:** [September 10, 2025, 5:53pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988 "2025-09-10T17:53:46Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![MichaelRobert](https://home.renovation.reviews/letter_avatar_proxy/v4/letter/m/da6949/32.png) [@MichaelRobert](https://home.renovation.reviews/u/MichaelRobert)\ **Post date:** [September 10, 2025, 5:53pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/1 "2025-09-10T17:53:46Z")
In New Zealand many roofing structures have failed because untreated timber was used during earlier construction. Renovators often discover rafters or purlins weakened by rot or insect damage long before the expected lifespan of the roof. This has led to costly repairs and has shaken confidence in projects built during that period. The issue stems from changes in building standards during the 1990s and 2000s when untreated radiata pine was allowed in many residential structures. The assumption was that dry conditions inside the roof cavity would protect timber. However in practice leaks condensation and high humidity created perfect conditions for decay. Renovators now face widespread repairs as these timbers deteriorate. Trade professionals describe these projects as difficult and disruptive. Replacing structural roof elements often requires removing roofing materials and working within confined spaces. Homeowners are shocked at the extent of work needed especially if the home is only a few decades old. Suppliers have since returned to promoting treated timber and alternative materials. Renovators argue that this shift was necessary but the damage from past failures will take years to fully resolve. They stress that materials must be tested in local conditions before being approved. Connclusion: untreated timber in roofing remains one of New Zealands most significant construction fails. Renovators continue to repair these homes while reminding the industry that shortcuts in material standards can create nationwide problems. ![images (98)](https://renovation-reviews.storage.googleapis.com/original/2X/3/30f994a3b0d594eb5a7f52a016605a303201d47b.jpeg) ![images (97)](https://renovation-reviews.storage.googleapis.com/original/2X/0/0d4d1100e22c2468803b83483020f73a794df39f.jpeg) ---
**Author:** ![Bobby\_Michael](https://home.renovation.reviews/user_avatar/home.renovation.reviews/bobby_michael/32/2057_2.png) [@Bobby\_Michael](https://home.renovation.reviews/u/Bobby_Michael)\ **Post date:** [September 10, 2025, 5:54pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/2 "2025-09-10T17:54:22Z")
You’re really right about this buddy ---
**Author:** ![iamade147](https://home.renovation.reviews/user_avatar/home.renovation.reviews/iamade147/32/9369_2.png) [@iamade147](https://home.renovation.reviews/u/iamade147)\ **Post date:** [September 10, 2025, 5:54pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/3 "2025-09-10T17:54:23Z")
They need to find a solution for this ---
**Author:** ![Onyxx](https://home.renovation.reviews/letter_avatar_proxy/v4/letter/o/da6949/32.png) [@Onyxx](https://home.renovation.reviews/u/Onyxx)\ **Post date:** [September 10, 2025, 5:54pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/4 "2025-09-10T17:54:36Z")
The lighting makes all the difference.. ---
**Author:** ![Succy](https://home.renovation.reviews/letter_avatar_proxy/v4/letter/s/ccd318/32.png) [@Succy](https://home.renovation.reviews/u/Succy)\ **Post date:** [September 10, 2025, 5:54pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/5 "2025-09-10T17:54:57Z")
Grateful for your message—it uplifts and motivates deeply and passionately ---
**Author:** ![Jakurasmith](https://home.renovation.reviews/user_avatar/home.renovation.reviews/jakurasmith/32/585_2.png) [@Jakurasmith](https://home.renovation.reviews/u/Jakurasmith)\ **Post date:** [September 10, 2025, 5:55pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/6 "2025-09-10T17:55:03Z")
Keep up the good work ---
**Author:** ![Yungstar](https://home.renovation.reviews/letter_avatar_proxy/v4/letter/y/71c47a/32.png) [@Yungstar](https://home.renovation.reviews/u/Yungstar)\ **Post date:** [September 10, 2025, 5:55pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/7 "2025-09-10T17:55:25Z")
This is a very good job ---
**Author:** ![Michelle\_Brown](https://home.renovation.reviews/user_avatar/home.renovation.reviews/michelle_brown/32/2325_2.png) [@Michelle\_Brown](https://home.renovation.reviews/u/Michelle_Brown)\ **Post date:** [September 10, 2025, 6:44pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/8 "2025-09-10T18:44:28Z")
I like how practical yet stylish it is. ---
**Author:** ![tayzer14](https://home.renovation.reviews/user_avatar/home.renovation.reviews/tayzer14/32/1866_2.png) [@tayzer14](https://home.renovation.reviews/u/tayzer14)\ **Post date:** [September 10, 2025, 6:44pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/9 "2025-09-10T18:44:56Z")
This needs to be worked on ---
**Author:** ![Bianca](https://home.renovation.reviews/letter_avatar_proxy/v4/letter/b/3be4f8/32.png) [@Bianca](https://home.renovation.reviews/u/Bianca)\ **Post date:** [September 10, 2025, 6:45pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/10 "2025-09-10T18:45:45Z")
You are doing great buddy ---
**Author:** ![Tim\_Michael1](https://home.renovation.reviews/user_avatar/home.renovation.reviews/tim_michael1/32/6294_2.png) [@Tim\_Michael1](https://home.renovation.reviews/u/Tim_Michael1)\ **Post date:** [September 10, 2025, 8:36pm UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/11 "2025-09-10T20:36:31Z")
Hmm great artucle Buddy Thank you ---
**Author:** ![Zee](https://home.renovation.reviews/user_avatar/home.renovation.reviews/zee/32/4693_2.png) [@Zee](https://home.renovation.reviews/u/Zee)\ **Post date:** [September 11, 2025, 1:51am UTC](https://home.renovation.reviews/t/new-zealand-roofing-failures-from-untreated-timber/34988/12 "2025-09-11T01:51:00Z")
New Zealand roofing failures