Preservation Works Ltd.

What Preservation Works Ltd. does

Preservation Works Ltd. is a privately held, founder-owned historic masonry restoration company founded in 2007 by Rob Wozniak and headquartered in Easton, Pennsylvania. Operating with 1-10 employees, the firm specializes in the restoration of pre-1940 brick and stone buildings using historically appropriate lime-based materials rather than incompatible modern Portland cement. Its core service lines include restoration and preservation, masonry coatings, plaster application, mortar analysis and matching, masonry cleaning, and consultation for property owners, architects, and contractors primarily in the Lehigh Valley region. The business also generates revenue from national e-commerce sales of imported European natural hydraulic lime (NHL) products from heritage manufacturers Lafarge (France), Tigre (Spain), and Vicat, with bag-level pricing of $45-$50; and from premium educational masterclasses on niche plaster techniques such as Scagliola and Sgraffito at $1,000-$2,500 per attendee.

The company has been entirely bootstrapped since founding with no external investors, no acquisition activity, and no disclosed funding rounds. Its distribution combines regional direct services delivery with national WooCommerce e-commerce supported by Square payments. Marketing is content-led through an extensive blog (with active posts as recently as October 2025), a Constant Contact email newsletter, and broad social media presence. Core technical differentiators include proprietary mortar analysis and matching expertise, use of ThermaTech super-heated water cleaning systems, ESCA Blast dustless blasting for coating removal without chemicals, and demonstrated capability in advanced decorative plastercraft. Strategic relationships with Tigre, Lafarge, Vicat, American Clay, EcoNest, ThermaTech, ESCA Blast, and Collomix cover materials supply, complementary products, and equipment. The business model is service-plus-product with all transactions on pay-as-you-go terms; bulk orders require direct contact. The firm positions itself as a domain specialist in a narrow craft niche rather than a scaled operations business.

Name

Preservation Works Ltd.

Legal name

Preservation Works, Ltd.

Website

https://preservationworks.us

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

1–10 employees

Short description

Preservation Works Ltd. is a bootstrapped Easton, Pennsylvania firm founded in 2007 that restores historic masonry using imported European natural hydraulic lime products, sells those materials nationally via e-commerce, and offers artisan plaster workshops.

Ownership category

akta.pro rank

Product category

Historic Masonry Restoration

NAICS

Masonry Contractors (23814)

SIC

Services-Miscellaneous Repair Services (7600), Retail-Building Materials, Hardware, Garden Supply (5200)

akta.pro industry

PRIMARYHSAPAEAG

Historic Home Renovation & Preservation

Home & Personal Services/Residential Renovation Services/Whole-Home Renovation & Remodel

SECONDARYHSAGACAC

Plaster Repair & Restoration (Lath & Plaster)

Home & Personal Services/Home Repair, Maintenance & Handyman/Drywall, Plaster & Interior Wall Repair

SECONDARYHSAPAHAE

Plaster Installation & Restoration (Traditional & Veneer)

Home & Personal Services/Residential Renovation Services/Painting, Drywall & Plastering

SECONDARYHSAGALAJ

Stone Masonry Repair & Restoration

Home & Personal Services/Home Repair, Maintenance & Handyman/Masonry & Concrete Repair

SECONDARYHSAEAOAJ

Slate & Flagstone Cleaning, Restoration & Sealing

Home & Personal Services/Home Cleaning & Housekeeping/Specialty Surface Cleaning (Stone/Marble/Wood Floor Care)

Keywords

• Historic masonry restoration
• Natural hydraulic lime
• Traditional plaster services
• Mortar analysis and matching
• Masonry surface cleaning

Headquarters

HQ city

Easton, Pennsylvania

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Supply Chain, Technology or R&D

Revenue model

1. Product Sales: Sale of natural hydraulic lime products, natural cement, and related masonry restoration materials through e-commerce platform. Products include Lafarge NHL products, Tigre NHL products, and Tigre Natural Cement sold in bags ranging from 20KG to 55lbs.
2. Restoration Services: Hands-on masonry restoration and preservation services including repointing, masonry wall stabilization, patching and crack repair, and historic plaster application.
3. Consulting Services: Masonry condition assessment, specification review, design development consultation, product installation training, and technical support for historic preservation projects.
4. Workshops and Masterclasses: Educational workshops on traditional plaster techniques including Scagliola and Sgraffito masterclasses taught by master craftsmen. Pricing from $1,000 to $2,500 per person or $2,500 for two people.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Preservation Works provides historic masonry restoration, plaster, mortar analysis and matching, masonry cleaning, coatings, and preservation consulting. It also sells natural hydraulic lime, natural cement, and related restoration materials online and offers paid masterclasses in Scagliola and Sgraffito techniques.

Product overview

Preservation Works Ltd. is a historic masonry restoration company offering a portfolio of European-imported natural hydraulic lime (NHL) products and natural cement materials, along with professional restoration services and artisan workshops. The core product line consists of Lafarge and Tigre branded NHL products (NHL 2.0, NHL 3.5, NHL 5.0) and Tigre and Vicat natural cements, which are complemented by masonry restoration services including restoration & preservation, plaster application, mortar matching, masonry cleaning, and consultation. The company also offers in-person masterclasses teaching traditional plaster techniques such as scagliola (imitation marble) and sgraffito.

Differentiator

Problem solved

Functional benefit

Products and services

• Lafarge Natural hydraulic Lime, NHL 3.5 A moderately hydraulic, nearly white lime produced in France for interior or exterior stucco and repointing historic brick and softer stone, including limestone, marble, and sandstone.
• Tigre Natural hydraulic Lime NHL 5.0 An off-white or light-tan natural hydraulic lime for pointing and building with harder brick and stone, with high water-vapor permeability and impermeability to liquid water.
• Tigre Natural hydraulic Lime NHL 3.5 An off-white or light-tan lime with plasticity and workability suited to exterior and interior plasters and grouts, particularly in high-humidity environments.
• Tigre Natural Cement A quick-setting natural cement that begins to set within 2 to 8 minutes and is used for hard-brick and concrete-masonry plastering, stone bedding, and ceramic or stone floor-tile setting.
• Vicat Prompt Natural Cement A natural, quick-setting cement for fast masonry work, heritage-asset restoration and decoration, and eco-construction; it is mined rather than extracted from open-air quarries.
• Lafarge Natural hydraulic Lime, NHL 2.0 A very white, slightly hydraulic French lime for interior plaster finishes and delicate exterior restoration of deteriorated masonry.
• Restoration & Preservation Services Masonry wall stabilization, patching and crack repair, salt-efflorescence abatement, and dry-laid stone-wall repair for historic buildings.
• Masonry Coatings Services Application of lime wash, potassium silicate, stucco, masonry paint, stains, water repellents, and traditional harling, pebbledash, and sanded finishes.
• Plaster Services Interior and exterior stucco application using natural hydraulic lime, gypsum, clay, and other materials, including custom decorative and ornamental finishes with pigment options.
• Mortar Services Mortar analysis and matching, careful removal, and replacement with historically appropriate mortar made with natural hydraulic lime, local sand, clay, pigments, and specified finishes or colors.
• Masonry Cleaning Services Cleaning historic masonry, plaster, wood, and metal surfaces and removing harmful lead paint, Portland cement, Brickcoat, and waterproofing with specialized cleaning systems.
• Consultation Services Masonry-condition assessment, specification review, design development, product-installation training, and tool and material advice for preservation projects.
• Sgraffito Masterclass Paid in-person instruction covering gypsum lime, Tadelakt, clay plaster, soap, pigments, run-in-situ molding, Moorish patterns, and Sgraffito techniques.
• Scagliola Masterclass Paid in-person instruction in creating scagliola, or imitation marble or granite, using plaster, hide glue mixed with water, lime-proof mineral pigments, materials, formulas, and processes.

Quantifiable outcome

• Mortar typically lasts 100 years before requiring replacement when properly applied
• +1 more outcomes

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Tigre Natural CementcoreTechnology or IntegrationFamily-owned Spanish manufacturer producing natural hydraulic lime and natural cement since 1945. Tigre is the only remaining producer of natural cement in Spain. Preservation Works imports and sells Tigre products including NHL 3.5, NHL 5.0, and Natural Cement. The companies share a commitment to keeping traditional lime production alive.
• LafargecoreTechnology or IntegrationFrench manufacturer of natural hydraulic lime products with production history dating back to the mid-1800s. Over 200 million bags manufactured for projects ranging from church renovations to new construction. Preservation Works sells Lafarge NHL products.
• American ClayminorGTM or Marketing PartnerManufacturer of clay plaster products used by Preservation Works in interior plaster projects. Featured on company website as a partner company.
• EcoNestminorStrategic or Co-development PartnerDesign-build company specializing in traditional timber framed homes with light clay straw infill, typically lime plastered inside and out. Preservation Works has collaborated on plasterwork for EcoNest projects.

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Conproco: Manufacturer of masonry restoration mortars, stuccos, and plasters including lime-based formulations. Direct comparable as a specialty masonry restoration materials supplier.
• Edison Coatings: US maker of restoration coatings, lime washes, and custom-matched masonry repair systems. Comparable product overlap in lime-based finishes and specialty coatings for historic masonry.
• Cathedral Stone Products: Manufacturer of masonry restoration materials including JAHN repair mortars and lime-based products. Directly comparable as a niche supplier of historically appropriate masonry repair systems.
• LimeWorks.us: US-based specialist in natural hydraulic lime mortars and historic masonry restoration products. Closest direct competitor in NHL distribution and traditional plaster/restoration materials for the US market.
• PROSOCO: Producer of masonry cleaners, sealers, and restoration chemicals. Directly comparable on the masonry cleaning and surface preparation side of Preservation Works' service offering.
• US Heritage Group: Historic preservation consulting and condition assessment firm. Comparable on the consultation/specification side of Preservation Works' service offering for architects and property owners.
• Virginia Lime Works: Specialty contractor and supplier focused on lime-based masonry restoration in the Mid-Atlantic. Comparable as a regional specialist combining services and lime product distribution.

Broad incumbents

• Quikrete: Large US manufacturer of packaged concrete, mortar, and masonry products. Broad incumbent that overlaps with Preservation Works on masonry repair products at lower price points and general contractor customers.

Regional players

• Ty-Mawr Lime: UK-based manufacturer and supplier of lime mortars, plasters, and traditional building materials. Comparable product portfolio; serves the UK market rather than competing directly in the US.
• Saint-Astier: French producer of natural hydraulic lime with US distribution. A direct upstream peer as a competing NHL brand sold into the US historic restoration market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/Preswrks
• YouTubeyoutube.com/channel/UCVoR6CllZ7MllOPtYC2iQvQ
• Facebookfacebook.com/PreservationWorks
• LinkedInlinkedin.com/company/preservation-works-ltd
• Instagraminstagram.com/preservationworks

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Preservation Works Ltd.