Call us at 810-213-8010

Built to last

Our work,guaranteed

Every ZLM project comes with our own warranty on our work, and most products we install also carry a warranty from the company that makes them. All ZLM warranty periods start on the date your project is completed.

File a warranty claim ⟶ or call 810-213-8010

Peace of mind, in writing

Warranty at a glance

CategoryZLM warrantyAfter the ZLM warranty endsManufacturer warranty
Hardscape3 years no questions asked$250 service call + $120/hrUnilock, Techo-Bloc, High Format, Arterra
Carpentry10 years workmanship$250 service call + $120/hrTrex, TimberTech
Finish (caulk, paint, stain)1 yearManufacturer warranty appliesSherwin-Williams
Landscape lightingLifetime on product · 50,000 hrs on bulbs · 1 year labor$250 service call + $120/hrAMP Lighting
Audio1 year$250 service call + $120/hrTruAudio, VSSL, Coastal Source
Motorized screens1 year$250 service call + $120/hrProgressive Screens (MagnaTrack)
Pergolas1 year$250 service call + $120/hrAzenco Outdoor
Pool finish (pebble)3 years installationManufacturer warranty appliesNPT StoneScapes

What's included

Coverage details

Hardscape 3 years, no questions asked

ZLM warranty: For three years after completion, if anything we installed has a problem — settling, shifting, loose pavers or wall units — we fix it at no charge for materials or labor.

After 3 years: repairs are billed at a $250 service call plus $120 per hour.

Manufacturer warranties

  • Unilock: Transferable lifetime guarantee on the structural integrity of paving stones, slabs, retaining wall units and natural stone for residential use. Defective material is replaced at no cost; replacement labor is not included and an exact color match can't be guaranteed. Register within 60 days of purchase at unilock.com/about/guarantee.
  • Techo-Bloc: Transferable lifetime warranty for residential use, starting on the delivery date. Covers structural integrity and abnormal surface damage from rock salt (except the Stonedge collection). Product only, not installation or replacement labor. Proof of purchase required.
  • High Format: Lifetime limited warranty on structural integrity for residential use, original owner only. Register within 60 days of purchase. Does not cover color variation, efflorescence, de-icing salt or fertilizer damage, hairline cracks, or labor.
  • Arterra porcelain pavers (MSI): Lifetime residential warranty against permanent staining, mold and mildew, and fading. Claims must be made to MSI within 15 days of noticing the problem. Arterra pavers don't need sealing; pressure wash at 1,600 psi or less.
Carpentry 10-year workmanship

ZLM warranty: For ten years after completion, we will repair any problem caused by how we built your deck, pergola, pavilion or other structure.

After 10 years: repairs are billed at a $250 service call plus $120 per hour.

Manufacturer warranties

  • Trex decking: Limited residential warranty and fade & stain warranty. Length depends on the line: Transcend 50 years, Select 35 years, Enhance 25 years. Trex replaces or refunds defective boards; installation labor isn't included.
  • TimberTech Advanced PVC decking: Limited lifetime product warranty plus a 50-year fade & stain limited warranty. Clean spills with soap and water within one week to keep stain coverage. Claims are filed at timbertech.com.
Finish (caulk, paint, stain) 1 year

ZLM warranty: If caulk, paint or stain peels, cracks or fails within one year because of how it was applied, we will redo it at no charge.

After 1 year: the Sherwin-Williams product warranty applies, depending on the product used — for example, Emerald exterior paint carries a lifetime limited warranty and SuperDeck waterborne deck stains carry a 3-year limited warranty. Your invoice lists the products used on your project.

Stain on decks and other walking surfaces wears with use and weather and needs periodic recoating. That's normal upkeep, not a warranty issue.

Landscape lighting Lifetime product · 1 year labor

ZLM warranty: Lifetime warranty on the fixtures and product, 50,000 hours on the LED bulbs, and 1 year on labor. For the first year, we come out and fix it at no charge.

After 1 year: product and bulbs are still covered, but service visits are billed at a $250 service call plus $120 per hour.

Manufacturer warranty, AMP Lighting: Lifetime warranty on brass fixtures, LED bulbs, and transformer cores and housings.

Audio 1 year

ZLM warranty: 1 year on the system and installation.

After 1 year: the manufacturer warranty covers the equipment, and service visits are billed at a $250 service call plus $120 per hour.

  • TruAudio: Outdoor speakers, subwoofers and amplifiers have a 5-year limited warranty on parts and repair labor. Original purchaser only.
  • VSSL streaming amplifiers: 1-year limited warranty. Original purchaser only.
  • Coastal Source: Repair or replacement of defective products within the warranty period. After the warranty, their Lifetime Care program gives 25% off a new replacement, even for damage from storms or lightning.
Motorized screens (MagnaTrack) 1 year

ZLM warranty: 1 year on the screens and installation.

After 1 year: the manufacturer warranty covers the product, and service visits are billed at a $250 service call plus $120 per hour.

Manufacturer warranty, Progressive Screens: Limited warranty against defects in materials and workmanship, for the original purchaser only (not transferable).

  • Motors: 5 years (void if the motor is exposed to water or abnormal conditions)
  • Electronics (remotes and receivers): 2 years
  • Aluminum components: lifetime, prorated after 2 years
  • Clear vinyl: 1 year, manufacturing defects only
  • Screen fabric (Twitchell): 10-year limited warranty. Harsh or improper cleaning chemicals void the fabric warranty.

Not covered: normal wear, storm or flying-debris damage, skipped cleaning and maintenance, modifications or unauthorized repairs, and use outside normal operating conditions.

Pergolas (Azenco Outdoor) 1 year

ZLM warranty: 1 year on the pergola and installation.

After 1 year: the manufacturer warranty covers the product, and service visits are billed at a $250 service call plus $120 per hour.

  • Aluminum structure: 15 years
  • Powder-coat finish: 15 years on standard colors, 10 years on custom colors
  • Motors: 5 years
  • Electrical components (sensors, control boxes, remotes, lights, transformers): 3 years

Azenco supplies replacement parts; labor isn't included. You must register your pergola within 60 days of installation to activate coverage — Azenco emails a registration form after installation, or register at azenco-outdoor.com/warranty. Azenco's warranty team: warranty@azenco-outdoor.com or (305) 306-3204.

Pool finish (NPT StoneScapes pebble) 3-year installation

ZLM warranty: For three years after completion, we will repair any problem with the pool finish caused by how we applied it.

Manufacturer warranty, NPT StoneScapes: 10-year limited warranty on the finish materials for every homeowner whose pool is finished with StoneScapes, extended to a lifetime limited warranty when applied by a StoneScapes Approved Applicator. NPT's warranty covers its materials, not installation.

Start-up care matters. Brush the whole pool daily for the first month, keep the water balanced, don't use an automatic or robotic cleaner for the first 14 days, and wait at least 14 days before heating the water. Discoloration, mottling or staining caused by water chemistry, chemical misuse or skipped start-up care isn't covered.

Keep it looking its best

Caring for your outdoor space

A little routine care keeps everything looking good and keeps your warranties valid. Most manufacturer warranties require the product to be used and maintained the way the manufacturer recommends.

Hardscape (pavers, walls, steps)
  • Sweep and rinse regularly so leaves, dirt and debris don't stain the surface or fill the joints.
  • Clean spills quickly. Oil, grease, grill drippings, rust, fertilizer and leaf tannins can stain if left sitting.
  • Top up joint sand before weeds and ants move in. We can do this for you.
  • Pressure wash gently — keep the wand moving and don't aim into the joints. Arterra porcelain: 1,600 psi or less.
  • Seal concrete pavers every 3–5 years. Arterra porcelain pavers never need sealing.
  • Winter: plastic shovel or a snow blower with the blade raised slightly. Use calcium or magnesium chloride ice melt rather than rock salt, sparingly — and none in the first winter after installation.
  • White haze (efflorescence) is normal on new concrete products and fades with rain and time.
  • Keep heavy equipment off patios and walkways not built for vehicles, and aim downspouts away from walls and patios.
Landscape lighting
  • Keep fixtures clear of plants, mulch, leaves and snow; wipe lenses a few times a year (no harsh chemicals on brass).
  • Re-aim lights as plants grow — call us if you'd like help.
  • Dig carefully. Low-voltage wire runs just under the surface — call us to mark it before planting, edging or aerating.
  • Leave the transformer plugged in on its timer or photocell. If the whole system goes dark, check the outlet's GFCI first.
  • Brass darkens to a natural bronze patina over time — that's normal.
Audio
  • Keep speakers clear of plants, mulch and snow, and never pressure wash them.
  • Keep the amplifier or streamer dry and ventilated as installed; don't block its vents.
  • Use a surge protector and consider unplugging during severe lightning storms.
  • Keep the volume below distortion — crackling or buzzing means the speakers are overdriven, and that damage isn't covered.
  • Keep the app and firmware updated on streaming equipment.
Motorized screens
  • Clean with mild soap, water and a soft brush. Never bleach, solvents or harsh cleaners. Clear vinyl: marine-grade vinyl cleaner only — never glass cleaner or ammonia.
  • Keep water away from the motor end and housing; keep tracks clear of debris.
  • Roll screens up in severe storms and when sustained winds reach 35–40 mph.
  • Cold weather: keep vinyl screens down below 50°F (including overnight). Never run a frozen screen — wait for ice in the tracks or on the bottom bar to melt. Clear snow from the tracks and sill before lowering. Let clear vinyl warm up before operating.
Pergolas
  • Wash with mild soap and water a couple of times a year; no abrasive pads or harsh chemicals on the powder coat.
  • Keep gutters and downspouts clear; run the louvers regularly; keep the remote, app and sensors clean and updated.
  • Cold weather: open the louvers in heavy snow. Don't run frozen louvers. Leave automatic mode on if you have snow and temperature sensors. Brush heavy snow off from the ground with a soft broom — never climb on the roof or use metal tools.
Pool finish (pebble)
  • Test the water weekly and keep pH, alkalinity and calcium hardness in range — unbalanced water causes etching, scaling and staining, which isn't covered.
  • Brush weekly with a nylon or combination brush (never metal).
  • Pre-dilute chemicals and add them in front of a return jet with the pump running.
  • Keep the pool full — don't drain it without talking to us first.
  • Remove leaves promptly, and have the pool closed professionally for winter.

The fine print

What isn't covered

These apply to the ZLM warranty in every category. Manufacturers have their own exclusions in their full warranty terms.

  • Damage from accidents, misuse, neglect, or lack of normal care and maintenance
  • Storms, floods, frost heave, lightning and other acts of nature
  • Damage caused by work done by others after we finish, including landscaping, fencing, excavation or utility work
  • Repairs or changes made by anyone other than ZLM, which void the ZLM warranty on that work
  • Natural variation in color and texture of stone, concrete and wood, and efflorescence
  • Normal wear, fading and weathering

We're here to help

How to make a claim

  1. Submit a claim online with photos of the problem and a copy of your invoice. We use your invoice to verify your warranty.
  2. We review it and contact you to schedule a visit. Our goal is to complete warranty repairs within 14 days of being notified.
  3. For product defects, we'll help you file the claim with the manufacturer.
Start a warranty claim

Prefer to talk? Call 810-213-8010 or write to us at 9422 Marine City Hwy, Casco, MI 48064.

Register your products. Unilock and High Format require registration within 60 days of purchase; Azenco pergolas within 60 days of installation.

Warranty terms effective November 2, 2026.