---
product_id: 55310525
title: "TIMCO Metal Insulation Disc - 35mm - Box of 100 - Galvanised"
brand: "timco"
price: "$27.60"
currency: USD
in_stock: true
reviews_count: 13
category: "Timco"
url: https://www.desertcart.us/products/55310525-timco-metal-insulation-disc-35mm-box-of-100-galvanised
store_origin: US
region: United States of America
---

# 35mm large diameter head Box of 100 discs for bulk projects Galvanised corrosion resistance rating 1 TIMCO Metal Insulation Disc - 35mm - Box of 100 - Galvanised

**Brand:** timco
**Price:** $27.60
**Availability:** ✅ In Stock

## Summary

> 🛠️ Lock in your insulation game with TIMCO’s metal discs — because quality is non-negotiable!

## Quick Answers

- **What is this?** TIMCO Metal Insulation Disc - 35mm - Box of 100 - Galvanised by timco
- **How much does it cost?** $27.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/55310525-timco-metal-insulation-disc-35mm-box-of-100-galvanised)

## Best For

- timco enthusiasts

## Why This Product

- Trusted timco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Ready:** 100 discs per box means you’re always prepped for any scale of insulation or repair job.
- • **Trusted Quality:** Top-rated TIMCO brand with 4.6 stars from 1,000+ reviews ensures reliability and peace of mind.
- • **Versatile Fixing:** Ideal for insulation attachment and ceiling crack repairs — a multitasker for pros.
- • **Corrosion-Resistant:** Galvanised finish with corrosion rating 1 keeps your work pristine in dry, low humidity environments.
- • **Secure & Streamlined:** Large 35mm head ensures insulation stays perfectly fastened with every screw.

## Overview

The TIMCO Metal Insulation Disc (35mm) comes in a convenient box of 100 galvanized carbon steel discs designed to securely hold insulation materials to battens and assist in ceiling crack repairs. With a corrosion resistance rating of 1, these discs are optimized for clean, dry, low humidity environments. Trusted by professionals for their durability and large diameter head, they offer a reliable, bulk solution for efficient insulation installation and repair.

## Description

Product Description Large diameter head for use with screws to hold insulation material to battens. Also used for ceiling crack repairs.NOTE: Once installed, the head of the fixing should be taped and sealed to avoid any contact with wet plaster. Failure to do so may result in surface damage. Box Contains 100 x Discs

Review: First class washers - Very good washer and top quality as you would expect from a reputable brand like Timco. Used this to secure wedi boards and best to steer clear of the cheap nasty oem unbranded ones. As the saying goes, you get what you pay you pay for.
Review: Great product - Bought for fitting tile backerboard in kitchen and lounge floors.Work really well and secure the boards down nicely. Very competitive price compared to some hardware shops.Makes a quick job of prepping a floor for tiling. I did use a couple of boxes doing a room but old victorian floorboards wanted a good foundation.would definitely recommend these.

## Features

- Box of 100
- Large diameter head for use with screws to hold insulation material to battens
- Also used for ceiling crack repairs
- Corrosion rating of 1 - For use in clean, dry & low humidity environments

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00Q6ELVKM |
| Best Sellers Rank | 15,061 in DIY & Tools ( See Top 100 in DIY & Tools ) 2 in Household Insulation Accessories |
| Brand | TIMCO |
| Compatible Devices | Angle grinder, table grinder |
| Compatible Material | Carbon Steel |
| Compatible devices | Angle grinder, table grinder |
| Construction Type | Bonded |
| Country Of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 1,000 Reviews |
| Global Trade Identification Number | 05055331897596 |
| Grit Material Type | Metal |
| Grit Number | 120 |
| Grit Type | Fine |
| Grit material | Metal |
| Grit type | Fine |
| Included Components | 100 x TIMCO Metal Insulation Disc 35mm |
| Industry Standard Identifier | 05055331897596 |
| Item Diameter | 35 Millimetres |
| Item Dimensions | 12.2 x 12.2 x 2.2 centimetres |
| Item Dimensions L x W | 35L x 35W millimetres |
| Item Thickness | 0.6 Millimetres |
| Item Type Name | Metal Insulation Disc |
| Item Weight | 0.04 Grams |
| Item thickness | 0.6 Millimetres |
| Manufacturer | TIMCO |
| Manufacturer Part Number | MID35 |
| Material | Carbon Steel |
| Model Number | MID35 |
| Number of Items | 100 |
| Product dimensions | 35L x 35W millimetres |
| Special Features | Galvanised |
| Unit Count | 100.0 count |

## Product Details

- **Brand:** TIMCO
- **Compatible devices:** Angle grinder, table grinder
- **Grit material:** Metal
- **Grit type:** Fine
- **Product dimensions:** 35L x 35W millimetres

## Images

![TIMCO Metal Insulation Disc - 35mm - Box of 100 - Galvanised - Image 1](https://m.media-amazon.com/images/I/71pf3o5tEoL.jpg)
![TIMCO Metal Insulation Disc - 35mm - Box of 100 - Galvanised - Image 2](https://m.media-amazon.com/images/I/61tIjPHbO8L.jpg)
![TIMCO Metal Insulation Disc - 35mm - Box of 100 - Galvanised - Image 3](https://m.media-amazon.com/images/I/71-hg71YG8L.jpg)
![TIMCO Metal Insulation Disc - 35mm - Box of 100 - Galvanised - Image 4](https://m.media-amazon.com/images/I/71H4opok+GL.jpg)
![TIMCO Metal Insulation Disc - 35mm - Box of 100 - Galvanised - Image 5](https://m.media-amazon.com/images/I/61hfI8CGJVL.jpg)

## Questions & Answers

**Q: Could this be used to secure 12.5 mm foam tile backer board (like kerdi board) to metal studs? If yes, what screws should be used?**
A: Yes that’s what I purchased them for I used 32 mm drywall screws but 25mm is sufficient

**Q: What is the inner diameter for the screw head?**
A: The centre hole will take a 5mm drill bit with a "sliding fit." (IE: drill a hole of that size, if your screws drop in easily, they will fit the discs). The diameter of the indented area is 14mm. Hope that helps.

**Q: Can you plaster over these fixings**
A: yes but you would need to tape over them first before plastering  as recommended by the manufactures 
NOTE: Once installed, the head of the fixing should be taped and sealed to avoid any contact with wet plaster. Failure to do so may result in surface damage.

**Q: Is there a right way and/or a wrong way round to apply these when installing PIR?**
A: I followed the, what appeared to me, logical with sharp edges pointing away from me, did a great job that is still hanging up after several years.  My ceiling and old lather and plaster had dropped down about 30cm right across the ceiling held there by paper.  Screwed it back up and finished it again great.

## Customer Reviews

### ⭐⭐⭐⭐⭐ First class washers
*by D***I on 6 December 2025*

Very good washer and top quality as you would expect from a reputable brand like Timco. Used this to secure wedi boards and best to steer clear of the cheap nasty oem unbranded ones. As the saying goes, you get what you pay you pay for.

### ⭐⭐⭐⭐⭐ Great product
*by J***O on 6 October 2023*

Bought for fitting tile backerboard in kitchen and lounge floors.Work really well and secure the boards down nicely. Very competitive price compared to some hardware shops.Makes a quick job of prepping a floor for tiling. I did use a couple of boxes doing a room but old victorian floorboards wanted a good foundation.would definitely recommend these.

### ⭐⭐⭐⭐ Backer board washers
*by M***. on 21 September 2024*

Used when fitting tile backer board to wooden studs. Prevents the backer board from being damaged by the screw heads.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-04*