New Construction Michigan 2026

Block Fill — New Construction CMU Walls

Block filling on a new commercial construction — bare CMU walls sealed and smoothed from rough porous block to a uniform, paint-ready surface throughout the facility.

Project Overview

New construction projects often call for block filling before any paint goes on the wall. Concrete masonry unit (CMU) block is inherently porous — the surface is rough, uneven, and will eat through paint without proper preparation. Block filler is applied first to penetrate and seal those voids, creating a smooth, consistent substrate that holds paint correctly and lasts.

On this commercial new construction project in Michigan, Endurance Painting handled the full block fill scope — working across the CMU walls of a large facility and bringing every surface from bare block to a clean, uniform finish ready for the final coat.

The Work

Block filling is a high-volume application job. The material is thick and needs to be worked into every void and joint in the block surface. On a facility of this scale, that means consistent coverage across hundreds of linear feet of wall, floor protection throughout, and an efficient two-man crew to keep pace with the schedule.

  • Floor protection laid throughout the work area before application began
  • Block filler applied by roller across all CMU walls — two coats worked into the block surface to fully seal pores and voids
  • All mortar joints and block faces filled and smoothed to a consistent finish
  • Upper wall line masked at the metal panel transition to keep a clean edge
  • Walls left smooth, sealed, and ready for the final paint system

Results

The finished walls are a night-and-day difference from bare block. The surface is smooth, uniform, and properly sealed — paint applied over block fill like this will adhere correctly, look better, and last significantly longer than paint over unprepped CMU. This is the foundational work that makes everything else on a new construction job look right.

Project Photos

Finished CMU block wall after block fill — smooth uniform surface sealed and ready for paint in new construction facility
Completed block fill — another section of the new construction CMU wall, fully sealed and smooth
Before — bare CMU block wall showing rough, porous block surface prior to filling
Two-man crew applying block filler by roller — wall partially filled showing the before-and-after difference in one shot
Crew working across the block wall — half filled, half bare, showing the clear transformation as work progresses
Crew starting block fill application — two painters rolling thick filler into the lower CMU wall sections
Crew member rolling block fill onto the CMU wall from a raised dock section of the facility
Wide shot of crew rolling block filler across the full length of the CMU wall
Crew laying floor protection before block fill application begins

Building New or Recoating an Existing Facility?

Whether it's block fill on new CMU, a full repaint, or a specialty coating system — Endurance Painting handles commercial and industrial facilities of any size. Let's talk about your project.

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