Every building-product price increase letter, in one place.
Roofing, HVAC, plumbing, electrical, drywall, insulation, pool, flooring, door hardware and more. We collect manufacturer price-increase announcements, freight/fuel surcharges and rescinded increases from distributor notice pages, manufacturer archives and the trade press, every day, so you can quote jobs before prices change.
1929letters tracked
1085brands
39effective in next 30 days
31sources
Every row links to the original letter or posting. Updated daily. See the trend charts →
Letters taking effect in May 2026
| Effective | Brand | Trade | Products | Increase | Source |
|---|---|---|---|---|---|
| May 4, 2026 | Ideal Industries | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 4, 2026 | KARNAK | Roofing | liquid products fabrics | 5.0%-8.0% | letter · ABC Supply letter · Convoy Supply (US) |
| May 4, 2026 | King Electric Manufacturing | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 4, 2026 | MI Windows and Doors | Windows & Doors | products except the 1650 and 1556 double hung lines has announced a price increase of approximately 5% on all products except the 1650 and 1556 double hung lines. We will adjust our prices effective with shipments on May 4, 2026. |
approximately 5% | Universal Supply |
| May 4, 2026 | Miter | Windows & Doors | Windows and Doors | 5%-9% | letter · ABC Supply |
| May 4, 2026 | National Gypsum Company | Roofing | Roof Boards | see letter | letter · ABC Supply |
| May 4, 2026 | Oldcastle | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 4, 2026 | Ram Steel Framing | Drywall & Interiors | Metal Framing, Studs & Tracks | 10% | letter · ABC Supply Interiors |
| May 4, 2026 | Shurtape Technologies | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 4, 2026 | Tarco | Roofing | Roofing underlayments | 5-10% | letter · ABC Supply Universal Supply |
| May 2, 2026 | Honeywell Commercial | HVAC | Price increase, effective May 2. |
see letter | ACHR News |
| May 1, 2026 | 3M | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 1, 2026 | Alco Products | Roofing | underlayment products Underlayment Products |
5% - 9% | letter · Gulfeagle Supply |
| May 1, 2026 | American Construction Materials | Roofing | aluminum and copper goods | 6-12% | letter · ABC Supply |
| May 1, 2026 | American Construction Metals | Roofing | aluminum copper goods | 6-12% | letter · ABC Supply |
| May 1, 2026 | Ardex | Pool | Fuel Surcharge Fuel Surcharge |
2% | Heritage Pool Supply |
| May 1, 2026 | Associated Materials Innovations | Siding | Vinyl siding products | 4-5% | letter · ABC Supply |
| May 1, 2026 | Atlas | Roofing | Polyiso Insulation Atlas - ACFoam Polyiso Roof Insulation Price Increase Announcement - Effective May 1, 2026 |
up to 6% | letter · ABC Supply letter · MAR Supply letter · Convoy Supply (US) letter · Gulfeagle Supply |
| May 1, 2026 | BWF/Teddico | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 1, 2026 | Carlisle HVAC Brands | HVAC | 3-5% on all items, effective May 1. |
3-5% | ACHR News |
| May 1, 2026 | Cendrex | Drywall & Interiors | Tools & Accessories | 15% price adjustment | letter · ABC Supply Interiors |
| May 1, 2026 | CertainTeed Siding | Siding | has announced a price increase of approximately 6% on CertainTeed Vinyl, Soffit and accessories, Cedar Impressions, and Rise Composite Cladding. We will adjust our prices effect… |
approximately 6% | Universal Supply |
| May 1, 2026 | Continental Materials, Inc. | Roofing | Synthetic Underlayments | 7-12% | letter · ABC Supply |
| May 1, 2026 | Cycan | HVAC | 8% | Conklin Metal Industries | |
| May 1, 2026 | Delaware Asphalt Products | Roofing | Freight Surcharge | Surcharge $400–$810 | letter · ABC Supply |
| May 1, 2026 | East Coast Metals | Roofing | Specialty Metal Products Aluminum and Copper Price Increase |
10%–12% | letter · Gulfeagle Supply |
| May 1, 2026 | Fluke | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 1, 2026 | GAF | Roofing | Residential Roofing Products; Commercial products; Roof & Wall Coatings; Roof Wall Coatings; Commercial Polyiso Products; Commercial roofing GAF - Coatings Freight Surcharge Increase - Effective May 1, 2026 |
5-10%; 3-8%; 3-5% | letter · ABC Supply letter · ABC Supply letter · ABC Supply letter · ABC Supply letter · ABC Supply letter · MAR Supply letter · MAR Supply letter · MAR Supply letter · Mueller Roofing Distributors letter · Gulfeagle Supply |
| May 1, 2026 | Glasfloss | HVAC | 2-4%, effective May 1. |
2-4% | ACHR News |
| May 1, 2026 | Hardcast | HVAC | 3% – 37.5% | Conklin Metal Industries | |
| May 1, 2026 | Hubbell: Quazite | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 1, 2026 | IPEX USA LLC PVC | Pool | Sewer Fittings | 10% | Heritage Pool Supply |
| May 1, 2026 | Ideal Products | HVAC | 15% / 25% | Conklin Metal Industries | |
| May 1, 2026 | Johns Manville | Insulation | Insulation | 6% | letter · ABC Supply Interiors letter · Performance Pro Supply |
| May 1, 2026 | Little Giant Pumps | HVAC | 2%, effective May 1. |
2% | ACHR News Johnstone Supply (Muskegon Group) Supply House Times / PM Magazine |
| May 1, 2026 | MFM | Roofing | All product lines | 5-7% | letter · ABC Supply letter · Gulfeagle Supply |
| May 1, 2026 | Mastic | Siding | vinyl siding, soffit, and accessories has announced a price increase of approximately 6% on vinyl siding, soffit, and accessories. We will adjust our prices effective with shipments on May 1, 2026. |
approximately 6% | Universal Supply |
| May 1, 2026 | Neptco | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 1, 2026 | OX Engineered Products | Roofing | Roofing products; Thermo-Ply products | 4-8%; 4% | letter · ABC Supply letter · ABC Supply |
| May 1, 2026 | OmegaFlex | HVAC | 6% on fitting products, effective May 1. |
6% | ACHR News |
| May 1, 2026 | Pabco Roofing Products | Roofing | Shingle products | up to 8% | letter · ABC Supply |
| May 1, 2026 | Parker Hannifin | HVAC | Parker Aftermarket Average weighted increase of 3.75%, excluding ZoomLock products, effective May 1. |
Average weighted increase of 3.75% | ACHR News |
| May 1, 2026 | Pentair Water Pool & Spa | Pool | IntelliChlor/IntelliCenter | 9.4% | Heritage Pool Supply |
| May 1, 2026 | Phoenix Contact | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 1, 2026 | Plygem | Siding | Aluminum products | 15% | letter · ABC Supply |
| May 1, 2026 | Polymer Adhesive | HVAC | 5% – 7% | Conklin Metal Industries | |
| May 1, 2026 | Reflective Products | HVAC | 3.5% | Conklin Metal Industries | |
| May 1, 2026 | Reflectix | HVAC | Up to 12%, effective May 1. |
Up to 12% | ACHR News |
| May 1, 2026 | Select Hinges | Door Hardware | Contact your Top Notch sales representative for details. |
see letter | letter · Top Notch Distributors |
| May 1, 2026 | Sika | Insulation | Insulation | 6% | letter · ABC Supply Interiors |
| May 1, 2026 | Slant/Fin | Plumbing & PVF | Canada pricing Slant/Fin will implement a 5% price increase on all Residential Baseboard and Commercial Products, including accessories, effective May 1, 2026. The notice also includes updates… |
5% | letter · Bartle & Gibson (Canada) |
| May 1, 2026 | Slant/Fin Baseboard | HVAC | 5%, effective May 1. |
5% | ACHR News |
| May 1, 2026 | Sporlan | HVAC | 4%, effective May 1. |
4% | ACHR News Johnstone Supply (Muskegon Group) Supply House Times / PM Magazine |
| May 1, 2026 | Systemair | HVAC | Fantech Average increase of 3.5-5% by product group, effective May 1. |
Average increase of 3.5-5% | ACHR News |
| May 1, 2026 | TracPipe | Plumbing & PVF | 6% increase on OmegaFlex fitting products, effective May 1 |
6% | Supply House Times / PM Magazine |
| May 1, 2026 | Valto | Drywall & Interiors | Fiberglass Reinforced Panels (FRP) | see letter | letter · ABC Supply Interiors |
| May 1, 2026 | Wago | Electrical | Price increase. |
see letter | Womack Electric Supply |
| May 1, 2026 | Westlake | Plumbing & PVF | Brownsville Fittings division implementing an 8% list and net price increase on select product categories, including large diameter fittings, Schedule 40 and 80, CPVC, HVAC and … |
8%, 10% | Supply House Times / PM Magazine |
| May 1, 2026 | Westlake Pipe & Fittings | Pool | Other | 8-10% | Heritage Pool Supply |
| May 1, 2026 | ZSI-Foster/Wesanco | Plumbing & PVF | 10% / 12% | Conklin Metal Industries |